<?php

/**
 * Lint for MARC records
 *
 * This module is adapted from the MARC::Lint CPAN module for Perl, maintained by
 * Bryan Baldus <eijabb@cpan.org> and available at http://search.cpan.org/~eijabb/
 *
 * Current MARC::Lint version used as basis for this module: 1.53
 *
 * PHP version 7
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2,
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * @category  VuFind
 * @package   MARC
 * @author    Demian Katz <demian.katz@villanova.edu>
 * @author    Dan Scott <dscott@laurentian.ca>
 * @author    Ere Maijala <ere.maijala@helsinki.fi>
 * @copyright 2003-2019 Oy Realnode Ab, Dan Scott
 * @license   http://opensource.org/licenses/gpl-2.0.php GNU General Public License
 * @link      https://vufind.org/wiki/development Wiki
 */

namespace VuFind\Marc;

use VuFindCode\ISBN;

use function count;
use function in_array;
use function intval;
use function strlen;

/**
 * Class for testing validity of MARC records against MARC21 standard.
 *
 * @category VuFind
 * @package  MARC
 * @author   Demian Katz <demian.katz@villanova.edu>
 * @author   Dan Scott <dscott@laurentian.ca>
 * @author   Ere Maijala <ere.maijala@helsinki.fi>
 * @license  http://opensource.org/licenses/gpl-2.0.php GNU General Public License
 * @link     https://vufind.org/wiki/development Wiki
 */
class MarcLint
{
    /**
     * Rules used for testing records
     *
     * @var array
     */
    protected $rules;

    /**
     * A Lint\CodeData object for validating codes
     *
     * @var Lint\CodeData
     */
    protected $data;

    /**
     * Warnings generated during analysis
     *
     * @var array
     */
    protected $warnings = [];

    /**
     * Start function
     *
     * Set up rules for testing MARC records.
     *
     * @return true
     */
    public function __construct()
    {
        $this->parseRules();
        $this->data = new Lint\CodeData();
    }

    /**
     * Check the provided MARC record and return an array of warning messages.
     *
     * @param MarcReader $marc Record to check
     *
     * @return array
     */
    public function checkRecord(MarcReader $marc): array
    {
        // Reset warnings:
        $this->warnings = [];

        $this->checkDuplicate1xx($marc);
        $this->checkMissing245($marc);
        $this->standardFieldChecks($marc);

        return $this->warnings;
    }

    /**
     * Add a warning.
     *
     * @param string $warning Warning to add
     *
     * @return void
     */
    protected function warn(string $warning): void
    {
        $this->warnings[] = $warning;
    }

    /**
     * Check for multiple 1xx fields.
     *
     * @param MarcReader $marc Record to check
     *
     * @return void
     */
    protected function checkDuplicate1xx(MarcReader $marc): void
    {
        $count = 0;
        foreach (['100', '110', '111', '130'] as $field) {
            $count += count($marc->getFields($field));
        }
        if ($count > 1) {
            $this->warn(
                "1XX: Only one 1XX tag is allowed, but I found $count of them."
            );
        }
    }

    /**
     * Check for missing 245 field.
     *
     * @param MarcReader $marc Record to check
     *
     * @return void
     */
    protected function checkMissing245(MarcReader $marc): void
    {
        if (!$marc->getField('245')) {
            $this->warn('245: No 245 tag.');
        }
    }

    /**
     * Check all fields against the standard rules encoded in the class.
     *
     * @param MarcReader $marc Record to check
     *
     * @return void
     */
    protected function standardFieldChecks(MarcReader $marc): void
    {
        $fieldsSeen = [];
        foreach ($marc->getAllFields() as $current) {
            $tagNo = $current['tag'];
            // if 880 field, inherit rules from tagno in subfield _6
            if ($tagNo == 880) {
                if ($sub6 = $marc->getSubfield($current, '6')) {
                    $tagNo = substr($sub6, 0, 3);
                    $tagrules = $this->rules[$tagNo] ?? null;
                    // 880 is repeatable, but its linked field may not be
                    if (
                        isset($tagrules['repeatable'])
                        && $tagrules['repeatable'] == 'NR'
                        && isset($fieldsSeen['880.' . $tagNo])
                    ) {
                        $this->warn("$tagNo: Field is not repeatable.");
                    }
                    $fieldsSeen['880.' . $tagNo]
                        = isset($fieldsSeen['880.' . $tagNo])
                        ? $fieldsSeen['880.' . $tagNo] + 1 : 1;
                } else {
                    $this->warn('880: No subfield 6.');
                    $tagrules = null;
                }
            } else {
                // Default case -- not an 880 field:
                $tagrules = $this->rules[$tagNo] ?? null;
                if (
                    isset($tagrules['repeatable']) && $tagrules['repeatable'] == 'NR'
                    && isset($fieldsSeen[$tagNo])
                ) {
                    $this->warn("$tagNo: Field is not repeatable.");
                }
                $fieldsSeen[$tagNo] = isset($fieldsSeen[$tagNo])
                    ? $fieldsSeen[$tagNo] + 1 : 1;
            }

            // Treat data fields differently from control fields:
            if (intval(ltrim($tagNo, '0')) >= 10) {
                if (!empty($tagrules)) {
                    $this->checkIndicators($tagNo, $current, $tagrules);
                    $this->checkSubfields($tagNo, $current, $tagrules);
                }
            } else {
                // Control field:
                if (isset($current['subfields'])) {
                    $this->warn(
                        "$tagNo: Subfields are not allowed in fields lower than 010"
                    );
                }
            }

            // Check to see if a checkxxx() function exists, and call it on the
            // field if it does
            $method = 'check' . $tagNo;
            if (method_exists($this, $method)) {
                $this->$method($current, $marc);
            }
        }
    }

    /**
     * Check the indicators for the provided field.
     *
     * @param string $tagNo Tag number being checked
     * @param array  $field Field to check
     * @param array  $rules Rules to use for checking
     *
     * @return void
     */
    protected function checkIndicators($tagNo, $field, $rules)
    {
        for ($i = 1; $i <= 2; $i++) {
            $ind = $field["i$i"];
            if ($ind === false || $ind == ' ') {
                $ind = 'b';
            }
            if (!strstr($rules['ind' . $i]['values'], $ind)) {
                // Make indicator blank value human-readable for message:
                if ($ind == 'b') {
                    $ind = 'blank';
                }
                $this->warn(
                    "$tagNo: Indicator $i must be "
                    . $rules['ind' . $i]['hr_values']
                    . " but it's \"$ind\""
                );
            }
        }
    }

    /**
     * Check the subfields for the provided field.
     *
     * @param string $tagNo Tag number being checked
     * @param array  $field Field to check
     * @param array  $rules Rules to use for checking
     *
     * @return void
     */
    protected function checkSubfields($tagNo, $field, $rules)
    {
        $subSeen = [];

        foreach ($field['subfields'] as $current) {
            $code = $current['code'];
            $data = $current['data'];

            $subrules = $rules['sub' . $code] ?? null;

            if (empty($subrules)) {
                $this->warn("$tagNo: Subfield _$code is not allowed.");
            } elseif ($subrules['repeatable'] == 'NR' && isset($subSeen[$code])) {
                $this->warn("$tagNo: Subfield _$code is not repeatable.");
            }

            if (preg_match('/\r|\t|\n/', $data)) {
                $this->warn(
                    "$tagNo: Subfield _$code has an invalid control character"
                );
            }

            $subSeen[$code] = isset($subSeen[$code]) ? $subSeen[$code]++ : 1;
        }
    }

    /**
     * Looks at 020$a and reports errors if the check digit is wrong.
     * Looks at 020$z and validates number if hyphens are present.
     *
     * @param array      $field Field to check
     * @param MarcReader $marc  MARC record
     *
     * @return void
     *
     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
     */
    protected function check020(array $field, MarcReader $marc): void
    {
        foreach ($field['subfields'] as $current) {
            $data = $current['data'];
            // remove any hyphens
            $isbn = str_replace('-', '', $data);
            // remove nondigits
            $isbn = preg_replace('/^\D*(\d{9,12}[X\d])\b.*$/', '$1', $isbn);

            if ($current['code'] === 'a') {
                if ((substr($data, 0, strlen($isbn)) != $isbn)) {
                    $this->warn('020: Subfield a may have invalid characters.');
                }

                // report error if no space precedes a qualifier in subfield a
                if (preg_match('/\(/', $data) && !preg_match('/[X0-9] \(/', $data)) {
                    $this->warn(
                        "020: Subfield a qualifier must be preceded by space, $data."
                    );
                }

                // report error if unable to find 10-13 digit string of digits in
                // subfield 'a'
                if (!preg_match('/(?:^\d{10}$)|(?:^\d{13}$)|(?:^\d{9}X$)/', $isbn)) {
                    $this->warn(
                        "020: Subfield a has the wrong number of digits, $data."
                    );
                } else {
                    $isbnObj = new ISBN($isbn);
                    if (strlen($isbn) == 10) {
                        if (!$isbnObj->isValid()) {
                            $this->warn("020: Subfield a has bad checksum, $data.");
                        }
                    } elseif (strlen($isbn) == 13) {
                        if (!$isbnObj->isValid()) {
                            $this->warn(
                                "020: Subfield a has bad checksum (13 digit), $data."
                            );
                        }
                    }
                }
            } elseif ($current['code'] === 'z') {
                // look for valid isbn in 020$z
                if (
                    preg_match('/^ISBN/', $data)
                    || preg_match('/^\d*\-\d+/', $data)
                ) {
                    // ##################################################
                    // ## Turned on for now--Comment to unimplement  ####
                    // ##################################################
                    if (strlen($isbn) == 10) {
                        $isbnObj = new ISBN($isbn);
                        if ($isbnObj->isValid()) {
                            $this->warn('020:  Subfield z is numerically valid.');
                        }
                    }
                }
            }
        }
    }

    /**
     * Warns if subfields are not evenly divisible by 3 unless second indicator is 7
     * (future implementation would ensure that each subfield is exactly 3 characters
     * unless ind2 is 7--since subfields are now repeatable. This is not implemented
     * here due to the large number of records needing to be corrected.). Validates
     * against the MARC Code List for Languages (<http://www.loc.gov/marc/>).
     *
     * @param array      $field Field to check
     * @param MarcReader $marc  MARC record
     *
     * @return void
     *
     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
     */
    protected function check041(array $field, MarcReader $marc): void
    {
        // warn if length of each subfield is not divisible by 3 unless ind2 is 7
        if ($field['i2'] != '7') {
            foreach ($field['subfields'] as $sub) {
                $code = $sub['code'];
                $data = $sub['data'];
                if (strlen($data) % 3 != 0) {
                    $this->warn(
                        "041: Subfield _$code must be evenly divisible by 3 or "
                        . "exactly three characters if ind2 is not 7, ($data)."
                    );
                } else {
                    for ($i = 0; $i < strlen($data); $i += 3) {
                        $chk = substr($data, $i, 3);
                        if (!in_array($chk, $this->data->languageCodes)) {
                            $obs = $this->data->obsoleteLanguageCodes;
                            if (in_array($chk, $obs)) {
                                $this->warn(
                                    "041: Subfield _$code, $data, may be obsolete."
                                );
                            } else {
                                $this->warn(
                                    "041: Subfield _$code, $data ($chk),"
                                    . ' is not valid.'
                                );
                            }
                        }
                    }
                }
            }
        }
    }

    /**
     * Warns if each subfield a is not exactly 7 characters. Validates each code
     * against the MARC code list for Geographic Areas (<http://www.loc.gov/marc/>).
     *
     * @param array      $field Field to check
     * @param MarcReader $marc  MARC record
     *
     * @return void
     *
     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
     */
    protected function check043(array $field, MarcReader $marc): void
    {
        foreach ($field['subfields'] as $sub) {
            if ('a' !== $sub['code']) {
                continue;
            }
            // warn if length of subfield a is not exactly 7
            $data = $sub['data'];
            if (strlen($data) != 7) {
                $this->warn("043: Subfield _a must be exactly 7 characters, $data");
            } elseif (!in_array($data, $this->data->geogAreaCodes)) {
                if (in_array($data, $this->data->obsoleteGeogAreaCodes)) {
                    $this->warn("043: Subfield _a, $data, may be obsolete.");
                } else {
                    $this->warn("043: Subfield _a, $data, is not valid.");
                }
            }
        }
    }

    /**
     * -Makes sure $a exists (and is first subfield).
     * -Warns if last character of field is not a period
     * --Follows LCRI 1.0C, Nov. 2003 rather than MARC21 rule
     * -Verifies that $c is preceded by / (space-/)
     * -Verifies that initials in $c are not spaced
     * -Verifies that $b is preceded by :;= (space-colon, space-semicolon,
     *  space-equals)
     * -Verifies that $h is not preceded by space unless it is dash-space
     * -Verifies that data of $h is enclosed in square brackets
     * -Verifies that $n is preceded by . (period)
     * --As part of that, looks for no-space period, or dash-space-period
     *  (for replaced elipses)
     * -Verifies that $p is preceded by , (no-space-comma) when following $n and
     *  . (period) when following other subfields.
     * -Performs rudimentary article check of 245 2nd indicator vs. 1st word of
     *  245$a (for manual verification).
     *
     * Article checking is done by internal checkArticle method, which should work
     * for 130, 240, 245, 440, 630, 730, and 830.
     *
     * @param array      $field Field to check
     * @param MarcReader $marc  MARC record
     *
     * @return void
     */
    protected function check245(array $field, MarcReader $marc): void
    {
        if (!$marc->getSubfields($field, 'a')) {
            $this->warn('245: Must have a subfield _a.');
        }

        // Convert subfields to array and set flags indicating which subfields are
        // present while we're at it.
        $tmp = $field['subfields'];
        $hasSubfields = $subfields = [];
        foreach ($tmp as $current) {
            $subfields[] = $current;
            $hasSubfields[$current['code']] = true;
        }

        // 245 must end in period (may want to make this less restrictive by allowing
        // trailing spaces)
        // do 2 checks--for final punctuation (MARC21 rule), and for period
        // (LCRI 1.0C, Nov. 2003)
        $lastChar = substr($subfields[count($subfields) - 1]['data'], -1);
        if (!in_array($lastChar, ['.', '?', '!'])) {
            $this->warn('245: Must end with . (period).');
        } elseif ($lastChar != '.') {
            $this->warn(
                '245: MARC21 allows ? or ! as final punctuation but LCRI 1.0C, Nov.'
                . ' 2003 (LCPS 1.7.1 for RDA records), requires period.'
            );
        }

        // Check for first subfield
        // subfield a should be first subfield (or 2nd if subfield '6' is present)
        if (isset($hasSubfields['6'])) {
            // make sure there are at least 2 subfields
            if (count($subfields) < 2) {
                $this->warn('245: May have too few subfields.');
            } else {
                $first = $subfields[0]['code'];
                $second = $subfields[1]['code'];
                if ($first != '6') {
                    $this->warn("245: First subfield must be _6, but it is $first");
                } elseif ($second != 'a') {
                    $this->warn(
                        '245: First subfield after subfield _6 must be _a, but it '
                        . "is _$second"
                    );
                }
            }
        } else {
            // 1st subfield must be 'a'
            $first = $subfields[0]['code'];
            if ($first != 'a') {
                $this->warn("245: First subfield must be _a, but it is _$first");
            }
        }
        // End check for first subfield

        // subfield c, if present, must be preceded by /
        // also look for space between initials
        if (isset($hasSubfields['c'])) {
            foreach ($subfields as $i => $current) {
                // 245 subfield c must be preceded by / (space-/)
                if ($current['code'] == 'c') {
                    if (
                        $i > 0
                        && !preg_match('/\s\/$/', $subfields[$i - 1]['data'])
                    ) {
                        $this->warn('245: Subfield _c must be preceded by /');
                    }
                    // 245 subfield c initials should not have space
                    if (preg_match('/\b\w\. \b\w\./', $current['data'])) {
                        $this->warn(
                            '245: Subfield _c initials should not have a space.'
                        );
                    }
                    break;
                }
            }
        }

        // each subfield b, if present, should be preceded by :;= (colon, semicolon,
        // or equals sign)
        if (isset($hasSubfields['b'])) {
            // 245 subfield b should be preceded by space-:;= (colon, semicolon, or
            // equals sign)
            foreach ($subfields as $i => $current) {
                if (
                    $current['code'] == 'b' && $i > 0
                    && !preg_match('/ [:;=]$/', $subfields[$i - 1]['data'])
                ) {
                    $this->warn(
                        '245: Subfield _b should be preceded by space-colon, '
                        . 'space-semicolon, or space-equals sign.'
                    );
                }
            }
        }

        // each subfield h, if present, should be preceded by non-space
        if (isset($hasSubfields['h'])) {
            // 245 subfield h should not be preceded by space
            foreach ($subfields as $i => $current) {
                // report error if subfield 'h' is preceded by space (unless
                // dash-space)
                if ($current['code'] == 'h') {
                    $prev = $subfields[$i - 1]['data'];
                    if ($i > 0 && !preg_match('/(\S$)|(\-\- $)/', $prev)) {
                        $this->warn(
                            '245: Subfield _h should not be preceded by space.'
                        );
                    }
                    // report error if subfield 'h' does not start with open square
                    // bracket with a matching close bracket; could have check
                    // against list of valid values here
                    $data = $current['data'];
                    if (!preg_match('/^\[\w*\s*\w*\]/', $data)) {
                        $this->warn(
                            '245: Subfield _h must have matching square brackets,'
                            . " $data."
                        );
                    }
                }
            }
        }

        // each subfield n, if present, must be preceded by . (period)
        if (isset($hasSubfields['n'])) {
            // 245 subfield n must be preceded by . (period)
            foreach ($subfields as $i => $current) {
                // report error if subfield 'n' is not preceded by non-space-period
                // or dash-space-period
                if ($current['code'] == 'n' && $i > 0) {
                    $prev = $subfields[$i - 1]['data'];
                    if (!preg_match('/(\S\.$)|(\-\- \.$)/', $prev)) {
                        $this->warn(
                            '245: Subfield _n must be preceded by . (period).'
                        );
                    }
                }
            }
        }

        // each subfield p, if present, must be preceded by a , (no-space-comma)
        // if it follows subfield n, or by . (no-space-period or
        // dash-space-period) following other subfields
        if (isset($hasSubfields['p'])) {
            // 245 subfield p must be preceded by . (period) or , (comma)
            foreach ($subfields as $i => $current) {
                if ($current['code'] == 'p' && $i > 0) {
                    $prev = $subfields[$i - 1];
                    // case for subfield 'n' being field before this one (allows
                    // dash-space-comma)
                    if (
                        $prev['code'] == 'n'
                        && !preg_match('/(\S,$)|(\-\- ,$)/', $prev['data'])
                    ) {
                        $this->warn(
                            '245: Subfield _p must be preceded by , (comma) '
                            . 'when it follows subfield _n.'
                        );
                    } elseif (
                        $prev['code'] != 'n'
                        && !preg_match('/(\S\.$)|(\-\- \.$)/', $prev['data'])
                    ) {
                        $this->warn(
                            '245: Subfield _p must be preceded by . (period)'
                            . ' when it follows a subfield other than _n.'
                        );
                    }
                }
            }
        }

        // check for invalid 2nd indicator
        $this->checkArticle($field, $marc);
    }

    /**
     * Check of articles is based on code from Ian Hamilton. This version is more
     * limited in that it focuses on English, Spanish, French, Italian and German
     * articles. Certain possible articles have been removed if they are valid
     * English non-articles. This version also disregards 008_language/041 codes
     * and just uses the list of articles to provide warnings/suggestions.
     *
     * Source for articles = <http://www.loc.gov/marc/bibliographic/bdapp-e.html>
     *
     * Should work with fields 130, 240, 245, 440, 630, 730, and 830. Reports error
     * if another field is passed in.
     *
     * @param array      $field Field to check
     * @param MarcReader $marc  MARC record
     *
     * @return void
     */
    protected function checkArticle(array $field, MarcReader $marc): void
    {
        // add articles here as needed
        // Some omitted due to similarity with valid words (e.g. the German 'die').
        static $article = [
            'a' => 'eng glg hun por',
            'an' => 'eng',
            'das' => 'ger',
            'dem' => 'ger',
            'der' => 'ger',
            'ein' => 'ger',
            'eine' => 'ger',
            'einem' => 'ger',
            'einen' => 'ger',
            'einer' => 'ger',
            'eines' => 'ger',
            'el' => 'spa',
            'en' => 'cat dan nor swe',
            'gl' => 'ita',
            'gli' => 'ita',
            'il' => 'ita mlt',
            'l' => 'cat fre ita mlt',
            'la' => 'cat fre ita spa',
            'las' => 'spa',
            'le' => 'fre ita',
            'les' => 'cat fre',
            'lo' => 'ita spa',
            'los' => 'spa',
            'os' => 'por',
            'the' => 'eng',
            'um' => 'por',
            'uma' => 'por',
            'un' => 'cat spa fre ita',
            'una' => 'cat spa ita',
            'une' => 'fre',
            'uno' => 'ita',
        ];

        // add exceptions here as needed
        // may want to make keys lowercase
        static $exceptions = [
            'A & E',
            'A & ',
            'A-',
            'A+',
            'A is ',
            'A isn\'t ',
            'A l\'',
            'A la ',
            'A posteriori',
            'A priori',
            'A to ',
            'El Nino',
            'El Salvador',
            'L is ',
            'L-',
            'La Salle',
            'Las Vegas',
            'Lo cual',
            'Lo mein',
            'Lo que',
            'Los Alamos',
            'Los Angeles',
        ];

        // get tagno to determine which indicator to check and for reporting
        $tagNo = $field['tag'];
        // retrieve tagno from subfield 6 if 880 field
        if ($tagNo == '880' && ($sub6 = $marc->getSubfield($field, '6'))) {
            $tagNo = substr($sub6, 0, 3);
        }

        // $ind holds nonfiling character indicator value
        $ind = '';
        // $first_or_second holds which indicator is for nonfiling char value
        $first_or_second = '';
        if (in_array($tagNo, [130, 630, 730])) {
            $ind = $field['i1'];
            $first_or_second = '1st';
        } elseif (in_array($tagNo, [240, 245, 440, 830])) {
            $ind = $field['i2'];
            $first_or_second = '2nd';
        } else {
            $this->warn(
                'Internal error: ' . $tagNo
                . ' is not a valid field for article checking'
            );
            return;
        }

        if (!is_numeric($ind)) {
            $this->warn($tagNo . ': Non-filing indicator is non-numeric');
            return;
        }

        // get subfield 'a' of the title field
        $title = $marc->getSubfield($field, 'a');

        // warn about out-of-range skip indicators (note: this feature is an
        // addition to the PHP code; it is not ported directly from MARC::Lint).
        if ($ind > strlen($title)) {
            $this->warn($tagNo . ': Non-filing indicator is out of range');
            return;
        }

        $char1_notalphanum = 0;
        // check for apostrophe, quote, bracket,  or parenthesis, before first word
        // remove if found and add to non-word counter
        while (preg_match('/^["\'\[\(*]/', $title)) {
            $char1_notalphanum++;
            $title = preg_replace('/^["\'\[\(*]/', '', $title);
        }
        // split title into first word + rest on space, parens, bracket, apostrophe,
        // quote, or hyphen
        preg_match('/^([^ \(\)\[\]\'"\-]+)([ \(\)\[\]\'"\-])?(.*)/i', $title, $hits);
        $firstword = $hits[1] ?? '';
        $separator = $hits[2] ?? '';
        $etc = $hits[3] ?? '';

        // get length of first word plus the number of chars removed above plus one
        // for the separator
        $nonfilingchars = strlen($firstword) + $char1_notalphanum + 1;

        // check to see if first word is an exception
        $isan_exception = false;
        foreach ($exceptions as $current) {
            if (substr($title, 0, strlen($current)) == $current) {
                $isan_exception = true;
                break;
            }
        }

        // lowercase chars of $firstword for comparison with article list
        $firstword = strtolower($firstword);

        // see if first word is in the list of articles and not an exception
        $isan_article = !$isan_exception && isset($article[$firstword]);

        // if article then $nonfilingchars should match $ind
        if ($isan_article) {
            // account for quotes, apostrophes, parens, or brackets before 2nd word
            if (strlen($separator) && preg_match('/^[ \(\)\[\]\'"\-]+/', $etc)) {
                while (preg_match('/^[ "\'\[\]\(\)*]/', $etc)) {
                    $nonfilingchars++;
                    $etc = preg_replace('/^[ "\'\[\]\(\)*]/', '', $etc);
                }
            }
            if ($nonfilingchars != $ind) {
                $this->warn(
                    $tagNo . ": First word, $firstword, may be an article, check "
                    . "$first_or_second indicator ($ind)."
                );
            }
        } else {
            // not an article so warn if $ind is not 0
            if ($ind != '0') {
                $this->warn(
                    $tagNo . ": First word, $firstword, does not appear to be an "
                    . "article, check $first_or_second indicator ($ind)."
                );
            }
        }
    }

    /**
     * Support method for constructor to load MARC rules.
     *
     * @return void
     */
    protected function parseRules()
    {
        // Break apart the rule data on line breaks:
        $lines = explode("\n", $this->getRawRules());

        // Each group of data is split by a blank line -- process one group
        // at a time:
        $currentGroup = [];
        foreach ($lines as $currentLine) {
            if (empty($currentLine)) {
                if (!empty($currentGroup)) {
                    $this->processRuleGroup($currentGroup);
                    $currentGroup = [];
                }
            } else {
                $currentGroup[] = preg_replace("/\s+/", ' ', $currentLine);
            }
        }

        // Still have unprocessed data after the loop?  Handle it now:
        if (!empty($currentGroup)) {
            $this->processRuleGroup($currentGroup);
        }
    }

    /**
     * Support method for parseRules() -- process one group of lines representing
     * a single tag.
     *
     * @param array $rules Rule lines to process
     *
     * @return void
     */
    protected function processRuleGroup($rules)
    {
        // The first line is guaranteed to exist and gives us some basic info:
        [$tag, $repeatable, $description] = explode(' ', $rules[0]);
        $this->rules[$tag] = [
            'repeatable' => $repeatable,
            'desc' => $description,
        ];

        // We may or may not have additional details:
        $ruleCount = count($rules);
        for ($i = 1; $i < $ruleCount; $i++) {
            [$key, $value, $lineDesc] = explode(' ', $rules[$i] . ' ');
            if (substr($key, 0, 3) == 'ind') {
                // Expand ranges:
                $value = str_replace('0-9', '0123456789', $value);
                $this->rules[$tag][$key] = [
                    'values' => $value,
                    'hr_values' => $this->getHumanReadableIndicatorValues($value),
                    'desc' => $lineDesc,
                ];
            } else {
                if (strlen($key) <= 1) {
                    $this->rules[$tag]['sub' . $key] = [
                        'repeatable' => $value,
                        'desc' => $lineDesc,
                    ];
                } elseif (strstr($key, '-')) {
                    [$startKey, $endKey] = explode('-', $key);
                    foreach (range($startKey, $endKey) as $sub) {
                        $this->rules[$tag]['sub' . $sub] = [
                            'repeatable' => $value,
                            'desc' => $lineDesc,
                        ];
                    }
                }
            }
        }
    }

    /**
     * Turn a set of indicator rules into a human-readable list.
     *
     * @param string $rules Indicator rules
     *
     * @return string
     */
    protected function getHumanReadableIndicatorValues($rules)
    {
        // No processing needed for blank rule:
        if ($rules == 'blank') {
            return $rules;
        }

        // Create string:
        $string = '';
        $length = strlen($rules);
        for ($i = 0; $i < $length; $i++) {
            $current = substr($rules, $i, 1);
            if ($current == 'b') {
                $current = 'blank';
            }
            $string .= $current;
            if ($length - $i == 2) {
                $string .= ' or ';
            } elseif ($length - $i > 2) {
                $string .= ', ';
            }
        }

        return $string;
    }

    /**
     * Support method for parseRules() -- get the raw rules from MARC::Lint.
     *
     * @return string
     */
    protected function getRawRules()
    {
        return <<<'RULES'
            001     NR      CONTROL NUMBER
            ind1    blank   Undefined
            ind2    blank   Undefined
                    NR      Undefined


            002     NR      LOCALLY DEFINED (UNOFFICIAL)
            ind1    blank   Undefined
            ind2    blank   Undefined
                    NR      Undefined

            003     NR      CONTROL NUMBER IDENTIFIER
            ind1    blank   Undefined
            ind2    blank   Undefined
                    NR      Undefined

            005     NR      DATE AND TIME OF LATEST TRANSACTION
            ind1    blank   Undefined
            ind2    blank   Undefined
                    NR      Undefined

            006     R       FIXED-LENGTH DATA ELEMENTS--ADDITIONAL MATERIAL CHARACTERISTICS--GENERAL INFORMATION
            ind1    blank   Undefined
            ind2    blank   Undefined
                    R       Undefined

            007     R       PHYSICAL DESCRIPTION FIXED FIELD--GENERAL INFORMATION
            ind1    blank   Undefined
            ind2    blank   Undefined
                    R       Undefined

            008     NR      FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION
            ind1    blank   Undefined
            ind2    blank   Undefined
                    NR      Undefined

            010     NR      LIBRARY OF CONGRESS CONTROL NUMBER
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      LC control number
            b       R       NUCMC control number
            z       R       Canceled/invalid LC control number
            8       R       Field link and sequence number

            013     R       PATENT CONTROL INFORMATION
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Number
            b       NR      Country
            c       NR      Type of number
            d       R       Date
            e       R       Status
            f       R       Party to document
            6       NR      Linkage
            8       R       Field link and sequence number

            015     R       NATIONAL BIBLIOGRAPHY NUMBER
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       R       National bibliography number
            q       R       Qualifying information
            z       R       Canceled/Invalid national bibliography number
            2       NR      Source
            6       NR      Linkage
            8       R       Field link and sequence number

            016     R       NATIONAL BIBLIOGRAPHIC AGENCY CONTROL NUMBER
            ind1    b7      National bibliographic agency
            ind2    blank   Undefined
            a       NR      Record control number
            z       R       Canceled or invalid record control number
            2       NR      Source
            8       R       Field link and sequence number

            017     R       COPYRIGHT OR LEGAL DEPOSIT NUMBER
            ind1    blank   Undefined
            ind2    b8      Display constant controller
            a       R       Copyright or legal deposit number
            b       NR      Assigning agency
            d       NR      Date
            i       NR      Display text
            z       R       Canceled/invalid copyright or legal deposit number
            2       NR      Source
            6       NR      Linkage
            8       R       Field link and sequence number

            018     NR      COPYRIGHT ARTICLE-FEE CODE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Copyright article-fee code
            6       NR      Linkage
            8       R       Field link and sequence number

            020     R       INTERNATIONAL STANDARD BOOK NUMBER
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      International Standard Book Number
            c       NR      Terms of availability
            q       R       Qualifying information
            z       R       Canceled/invalid ISBN
            6       NR      Linkage
            8       R       Field link and sequence number

            022     R       INTERNATIONAL STANDARD SERIAL NUMBER
            ind1    b01     Level of international interest
            ind2    blank   Undefined
            a       NR      International Standard Serial Number
            l       NR      ISSN-L
            m       R       Canceled ISSN-L
            y       R       Incorrect ISSN
            z       R       Canceled ISSN
            2       NR      Source
            6       NR      Linkage
            8       R       Field link and sequence number

            024     R       OTHER STANDARD IDENTIFIER
            ind1    0123478    Type of standard number or code
            ind2    b01     Difference indicator
            a       NR      Standard number or code
            c       NR      Terms of availability
            d       NR      Additional codes following the standard number or code
            q       R       Qualifying information
            z       R       Canceled/invalid standard number or code
            2       NR      Source of number or code
            6       NR      Linkage
            8       R       Field link and sequence number

            025     R       OVERSEAS ACQUISITION NUMBER
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       R       Overseas acquisition number
            8       R       Field link and sequence number

            026     R       FINGERPRINT IDENTIFIER
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      First and second groups of characters
            b       NR      Third and fourth groups of characters
            c       NR      Date
            d       R       Number of volume or part
            e       NR      Unparsed fingerprint
            2       NR      Source
            5       R       Institution to which field applies
            6       NR      Linkage
            8       R       Field link and sequence number

            027     R       STANDARD TECHNICAL REPORT NUMBER
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Standard technical report number
            q       R       Qualifying information
            z       R       Canceled/invalid number
            6       NR      Linkage
            8       R       Field link and sequence number

            028     R       PUBLISHER NUMBER OR DISTRIBUTOR NUMBER
            ind1    0123456   Type of number
            ind2    0123    Note/added entry controller
            a       NR      Publisher or distributor number
            b       NR      Source
            q       R       Qualifying information
            6       NR      Linkage
            8       R       Field link and sequence number

            030     R       CODEN DESIGNATION
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      CODEN
            z       R       Canceled/invalid CODEN
            6       NR      Linkage
            8       R       Field link and sequence number

            031     R       MUSICAL INCIPITS INFORMATION
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Number of work
            b       NR      Number of movement
            c       NR      Number of excerpt
            d       R       Caption or heading
            e       NR      Role
            g       NR      Clef
            m       NR      Voice/instrument
            n       NR      Key signature
            o       NR      Time signature
            p       NR      Musical notation
            q       R       General note
            r       NR      Key or mode
            s       R       Coded validity note
            t       R       Text incipit
            u       R       Uniform Resource Identifier
            y       R       Link text
            z       R       Public note
            2       NR      System code
            6       NR      Linkage
            8       R       Field link and sequence number

            032     R       POSTAL REGISTRATION NUMBER
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Postal registration number
            b       NR      Source (agency assigning number)
            6       NR      Linkage
            8       R       Field link and sequence number

            033     R       DATE/TIME AND PLACE OF AN EVENT
            ind1    b012    Type of date in subfield $a
            ind2    b012    Type of event
            a       R       Formatted date/time
            b       R       Geographic classification area code
            c       R       Geographic classification subarea code
            p       R       Place of event
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       R       Source of term
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            034     R       CODED CARTOGRAPHIC MATHEMATICAL DATA
            ind1    013     Type of scale
            ind2    b01     Type of ring
            a       NR      Category of scale
            b       R       Constant ratio linear horizontal scale
            c       R       Constant ratio linear vertical scale
            d       NR      Coordinates--westernmost longitude
            e       NR      Coordinates--easternmost longitude
            f       NR      Coordinates--northernmost latitude
            g       NR      Coordinates--southernmost latitude
            h       R       Angular scale
            j       NR      Declination--northern limit
            k       NR      Declination--southern limit
            m       NR      Right ascension--eastern limit
            n       NR      Right ascension--western limit
            p       NR      Equinox
            r       NR      Distance from earth
            s       R       G-ring latitude
            t       R       G-ring longitude
            x       NR      Beginning date
            y       NR      Ending date
            z       NR      Name of extraterrestrial body
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            035     R       SYSTEM CONTROL NUMBER
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      System control number
            z       R       Canceled/invalid control number
            6       NR      Linkage
            8       R       Field link and sequence number

            036     NR      ORIGINAL STUDY NUMBER FOR COMPUTER DATA FILES
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Original study number
            b       NR      Source (agency assigning number)
            6       NR      Linkage
            8       R       Field link and sequence number

            037     R       SOURCE OF ACQUISITION
            ind1    b23     Source of acquisition sequence
            ind2    blank   Undefined
            a       NR      Stock number
            b       NR      Source of stock number/acquisition
            c       R       Terms of availability
            f       R       Form of issue
            g       R       Additional format characteristics
            n       R       Note
            3       NR      Materials specified
            5       R       Institution to which field applies
            6       NR      Linkage
            8       R       Field link and sequence number

            038     NR      RECORD CONTENT LICENSOR
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Record content licensor
            6       NR      Linkage
            8       R       Field link and sequence number

            040     NR      CATALOGING SOURCE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Original cataloging agency
            b       NR      Language of cataloging
            c       NR      Transcribing agency
            d       R       Modifying agency
            e       R       Description conventions
            6       NR      Linkage
            8       R       Field link and sequence number

            041     R       LANGUAGE CODE
            ind1    b01      Translation indication
            ind2    b7      Source of code
            a       R       Language code of text/sound track or separate title
            b       R       Language code of summary or abstract
            d       R       Language code of sung or spoken text
            e       R       Language code of librettos
            f       R       Language code of table of contents
            g       R       Language code of accompanying material other than librettos and transcripts
            h       R       Language code of original
            i       R       Language code of intertitles
            j       R       Language code of subtitles
            k       R       Language code of intermediate translations
            m       R       Language code of original accompanying materials other than librettos
            n       R       Language code of original libretto
            p       R       Language code of captions
            q       R       Language code of accessible audio
            r       R       Language code of accessible visual language (non-textual)
            t       R       Language code of accompanying transcripts for audiovisual materials
            2       NR      Source of code
            6       NR      Linkage
            8       R       Field link and sequence number

            042     NR      AUTHENTICATION CODE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       R       Authentication code

            043     NR      GEOGRAPHIC AREA CODE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       R       Geographic area code
            b       R       Local GAC code
            c       R       ISO code
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       R       Source of local code
            6       NR      Linkage
            8       R       Field link and sequence number

            044     NR      COUNTRY OF PUBLISHING/PRODUCING ENTITY CODE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       R       MARC country code
            b       R       Local subentity code
            c       R       ISO country code
            2       R       Source of local subentity code
            6       NR      Linkage
            8       R       Field link and sequence number

            045     NR      TIME PERIOD OF CONTENT
            ind1    b012    Type of time period in subfield $b or $c
            ind2    blank   Undefined
            a       R       Time period code
            b       R       Formatted 9999 B.C. through C.E. time period
            c       R       Formatted pre-9999 B.C. time period
            6       NR      Linkage
            8       R       Field link and sequence number

            046     R       SPECIAL CODED DATES
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Type of date code
            b       NR      Date 1 (B.C.E. date)
            c       NR      Date 1 (C.E. date)
            d       NR      Date 2 (B.C.E. date)
            e       NR      Date 2 (C.E. date)
            j       NR      Date resource modified
            k       NR      Beginning or single date created
            l       NR      Ending date created
            m       NR      Beginning of date valid
            n       NR      End of date valid
            o       NR      Single or starting date for aggregated content
            p       NR      Ending date for aggregated content
            2       NR      Source of date
            6       NR      Linkage
            8       R       Field link and sequence number

            047     R       FORM OF MUSICAL COMPOSITION CODE
            ind1    blank   Undefined
            ind2    b7      Source of code
            a       R       Form of musical composition code
            2       NR      Source of code
            8       R       Field link and sequence number

            048     R       NUMBER OF MUSICAL INSTRUMENTS OR VOICES CODE
            ind1    blank   Undefined
            ind2    b7      Source of code
            a       R       Performer or ensemble
            b       R       Soloist
            2       NR      Source of code
            8       R       Field link and sequence number

            050     R       LIBRARY OF CONGRESS CALL NUMBER
            ind1    b01     Existence in LC collection
            ind2    04      Source of call number
            a       R       Classification number
            b       NR      Item number
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            051     R       LIBRARY OF CONGRESS COPY, ISSUE, OFFPRINT STATEMENT
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Classification number
            b       NR      Item number
            c       NR      Copy information
            8       R       Field link and sequence number

            052     R       GEOGRAPHIC CLASSIFICATION
            ind1    b17     Code source
            ind2    blank   Undefined
            a       NR      Geographic classification area code
            b       R       Geographic classification subarea code
            d       R       Populated place name
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Code source
            6       NR      Linkage
            8       R       Field link and sequence number

            055     R       CLASSIFICATION NUMBERS ASSIGNED IN CANADA
            ind1    b01     Existence in LAC collection
            ind2    0123456789   Type, completeness, source of class/call number
            a       NR      Classification number
            b       NR      Item number
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of call/class number
            6       NR      Linkage
            8       R       Field link and sequence number

            060     R       NATIONAL LIBRARY OF MEDICINE CALL NUMBER
            ind1    b01     Existence in NLM collection
            ind2    04      Source of call number
            a       R       Classification number
            b       NR      Item number
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            8       R       Field link and sequence number

            061     R       NATIONAL LIBRARY OF MEDICINE COPY STATEMENT
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       R       Classification number
            b       NR      Item number
            c       NR      Copy information
            8       R       Field link and sequence number

            066     NR      CHARACTER SETS PRESENT
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Primary G0 character set
            b       NR      Primary G1 character set
            c       R       Alternate G0 or G1 character set

            070     R       NATIONAL AGRICULTURAL LIBRARY CALL NUMBER
            ind1    b01     Existence in NAL collection
            ind2    blank   Undefined
            a       R       Classification number
            b       NR      Item number
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            8       R       Field link and sequence number

            071     R       NATIONAL AGRICULTURAL LIBRARY COPY STATEMENT
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       R       Classification number
            b       NR      Item number
            c       NR      Copy information
            8       R       Field link and sequence number

            072     R       SUBJECT CATEGORY CODE
            ind1    blank   Undefined
            ind2    07      Code source
            a       NR      Subject category code
            x       R       Subject category code subdivision
            2       NR      Source
            6       NR      Linkage
            8       R       Field link and sequence number

            074     R       GPO ITEM NUMBER
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      GPO item number
            z       R       Canceled/invalid GPO item number
            8       R       Field link and sequence number

            080     R       UNIVERSAL DECIMAL CLASSIFICATION NUMBER
            ind1    b01     Type of edition
            ind2    blank   Undefined
            a       NR      Universal Decimal Classification number
            b       NR      Item number
            x       R       Common auxiliary subdivision
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Edition identifier
            6       NR      Linkage
            8       R       Field link and sequence number

            082     R       DEWEY DECIMAL CLASSIFICATION NUMBER
            ind1    017     Type of edition
            ind2    b04     Source of classification number
            a       R       Classification number
            b       NR      Item number
            m       NR      Standard or optional designation
            q       NR      Assigning agency
            2       NR      Edition number
            6       NR      Linkage
            8       R       Field link and sequence number

            083     R       ADDITIONAL DEWEY DECIMAL CLASSIFICATION NUMBER
            ind1    017     Type of edition
            ind2    blank   Undefined
            a       R       Classification number
            c       R       Classification number--Ending number of span
            m       NR      Standard or optional designation
            q       NR      Assigning agency
            y       R       Table sequence number for internal subarrangement or add table
            z       R       Table identification
            2       NR      Edition number
            6       NR      Linkage
            8       R       Field link and sequence number

            084     R       OTHER CLASSIFICATION NUMBER
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       R       Classification number
            b       NR      Item number
            q       NR      Assigning agency
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of number
            6       NR      Linkage
            8       R       Field link and sequence number

            085     R       SYNTHESIZED CLASSIFICATION NUMBER COMPONENTS
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       R       Number where instructions are found-single number or beginning number of span
            b       R       Base number
            c       R       Classification number-ending number of span
            f       R       Facet designator
            r       R       Root number
            s       R       Digits added from classification number in schedule or external table
            t       R       Digits added from internal subarrangement or add table
            u       R       Number being analyzed
            v       R       Number in internal subarrangement or add table where instructions are found
            w       R       Table identification-Internal subarrangement or add table
            y       R       Table sequence number for internal subarrangement or add table
            z       R       Table identification
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            6       NR      Linkage
            8       R       Field link and sequence number

            086     R       GOVERNMENT DOCUMENT CLASSIFICATION NUMBER
            ind1    b01     Number source
            ind2    blank   Undefined
            a       NR      Classification number
            z       R       Canceled/invalid classification number
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Number source
            6       NR      Linkage
            8       R       Field link and sequence number

            088     R       REPORT NUMBER
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Report number
            z       R       Canceled/invalid report number
            6       NR      Linkage
            8       R       Field link and sequence number

            100     NR      MAIN ENTRY--PERSONAL NAME
            ind1    013     Type of personal name entry element
            ind2    blank   Undefined
            a       NR      Personal name
            b       NR      Numeration
            c       R       Titles and other words associated with a name
            d       NR      Dates associated with a name
            e       R       Relator term
            f       NR      Date of a work
            g       R       Miscellaneous information
            j       R       Attribution qualifier
            k       R       Form subheading
            l       NR      Language of a work
            n       R       Number of part/section of a work
            p       R       Name of part/section of a work
            q       NR      Fuller form of name
            t       NR      Title of a work
            u       NR      Affiliation
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of heading or term
            4       R       Relationship
            6       NR      Linkage
            8       R       Field link and sequence number

            110     NR      MAIN ENTRY--CORPORATE NAME
            ind1    012     Type of corporate name entry element
            ind2    blank   Undefined
            a       NR      Corporate name or jurisdiction name as entry element
            b       R       Subordinate unit
            c       R       Location of meeting
            d       R       Date of meeting or treaty signing
            e       R       Relator term
            f       NR      Date of a work
            g       R       Miscellaneous information
            k       R       Form subheading
            l       NR      Language of a work
            n       R       Number of part/section/meeting
            p       R       Name of part/section of a work
            t       NR      Title of a work
            u       NR      Affiliation
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of heading or term
            4       R       Relationship
            6       NR      Linkage
            8       R       Field link and sequence number

            111     NR      MAIN ENTRY--MEETING NAME
            ind1    012     Type of meeting name entry element
            ind2    blank   Undefined
            a       NR      Meeting name or jurisdiction name as entry element
            c       R       Location of meeting
            d       R       Date of meeting or treaty signing
            e       R       Subordinate unit
            f       NR      Date of a work
            g       R       Miscellaneous information
            j       R       Relator term
            k       R       Form subheading
            l       NR      Language of a work
            n       R       Number of part/section/meeting
            p       R       Name of part/section of a work
            q       NR      Name of meeting following jurisdiction name entry element
            t       NR      Title of a work
            u       NR      Affiliation
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of heading or term
            4       R       Relationship
            6       NR      Linkage
            8       R       Field link and sequence number

            130     NR      MAIN ENTRY--UNIFORM TITLE
            ind1    0-9     Nonfiling characters
            ind2    blank   Undefined
            a       NR      Uniform title
            d       R       Date of treaty signing
            f       NR      Date of a work
            g       R       Miscellaneous information
            h       NR      Medium
            k       R       Form subheading
            l       NR      Language of a work
            m       R       Medium of performance for music
            n       R       Number of part/section of a work
            o       NR      Arranged statement for music
            p       R       Name of part/section of a work
            r       NR      Key for music
            s       R       Version
            t       NR      Title of a work
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of heading or term
            6       NR      Linkage
            8       R       Field link and sequence number

            210     R       ABBREVIATED TITLE
            ind1    01      Title added entry
            ind2    b0      Type
            a       NR      Abbreviated title
            b       NR      Qualifying information
            2       R       Source
            6       NR      Linkage
            8       R       Field link and sequence number

            222     R       KEY TITLE
            ind1    blank   Undefined
            ind2    0-9     Nonfiling characters
            a       NR      Key title
            b       NR      Qualifying information
            6       NR      Linkage
            8       R       Field link and sequence number

            240     NR      UNIFORM TITLE
            ind1    01    Uniform title printed or displayed
            ind2    0-9    Nonfiling characters
            a       NR      Uniform title
            d       R       Date of treaty signing
            f       NR      Date of a work
            g       R       Miscellaneous information
            h       NR      Medium
            k       R       Form subheading
            l       NR      Language of a work
            m       R       Medium of performance for music
            n       R       Number of part/section of a work
            o       NR      Arranged statement for music
            p       R       Name of part/section of a work
            r       NR      Key for music
            s       R       Version
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of heading or term
            6       NR      Linkage
            8       R       Field link and sequence number

            242     R       TRANSLATION OF TITLE BY CATALOGING AGENCY
            ind1    01    Title added entry
            ind2    0-9    Nonfiling characters
            a       NR      Title
            b       NR      Remainder of title
            c       NR      Statement of responsibility, etc.
            h       NR      Medium
            n       R       Number of part/section of a work
            p       R       Name of part/section of a work
            y       NR      Language code of translated title
            6       NR      Linkage
            8       R       Field link and sequence number

            243     NR      COLLECTIVE UNIFORM TITLE
            ind1    01    Uniform title printed or displayed
            ind2    0-9    Nonfiling characters
            a       NR      Uniform title
            d       R       Date of treaty signing
            f       NR      Date of a work
            g       R       Miscellaneous information
            h       NR      Medium
            k       R       Form subheading
            l       NR      Language of a work
            m       R       Medium of performance for music
            n       R       Number of part/section of a work
            o       NR      Arranged statement for music
            p       R       Name of part/section of a work
            r       NR      Key for music
            s       R       Version
            6       NR      Linkage
            8       R       Field link and sequence number

            245     NR      TITLE STATEMENT
            ind1    01    Title added entry
            ind2    0-9    Nonfiling characters
            a       NR      Title
            b       NR      Remainder of title
            c       NR      Statement of responsibility, etc.
            f       NR      Inclusive dates
            g       NR      Bulk dates
            h       NR      Medium
            k       R       Form
            n       R       Number of part/section of a work
            p       R       Name of part/section of a work
            s       NR      Version
            6       NR      Linkage
            8       R       Field link and sequence number

            246     R       VARYING FORM OF TITLE
            ind1    0123    Note/added entry controller
            ind2    b012345678    Type of title
            a       NR      Title proper/short title
            b       NR      Remainder of title
            f       NR      Date or sequential designation
            g       R       Miscellaneous information
            h       NR      Medium
            i       NR      Display text
            n       R       Number of part/section of a work
            p       R       Name of part/section of a work
            5       NR      Institution to which field applies
            6       NR      Linkage
            8       R       Field link and sequence number

            247     R       FORMER TITLE
            ind1    01      Title added entry
            ind2    01      Note controller
            a       NR      Title
            b       NR      Remainder of title
            f       NR      Date or sequential designation
            g       R       Miscellaneous information
            h       NR      Medium
            n       R       Number of part/section of a work
            p       R       Name of part/section of a work
            x       NR      International Standard Serial Number
            6       NR      Linkage
            8       R       Field link and sequence number

            250     R       EDITION STATEMENT
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Edition statement
            b       NR      Remainder of edition statement
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            251     R       VERSION INFORMATION
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       R       Version
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number


            254     NR      MUSICAL PRESENTATION STATEMENT
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Musical presentation statement
            6       NR      Linkage
            8       R       Field link and sequence number

            255     R       CARTOGRAPHIC MATHEMATICAL DATA
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Statement of scale
            b       NR      Statement of projection
            c       NR      Statement of coordinates
            d       NR      Statement of zone
            e       NR      Statement of equinox
            f       NR      Outer G-ring coordinate pairs
            g       NR      Exclusion G-ring coordinate pairs
            6       NR      Linkage
            8       R       Field link and sequence number

            256     NR      COMPUTER FILE CHARACTERISTICS
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Computer file characteristics
            6       NR      Linkage
            8       R       Field link and sequence number

            257     R       COUNTRY OF PRODUCING ENTITY
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       R       Country of producing entity
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source
            6       NR      Linkage
            8       R       Field link and sequence number

            258     R       PHILATELIC ISSUE DATE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Issuing jurisdiction
            b       NR      Denomination
            6       NR      Linkage
            8       R       Field link and sequence number

            260     R       PUBLICATION, DISTRIBUTION, ETC. (IMPRINT)
            ind1    b23     Sequence of publishing statements
            ind2    blank   Undefined
            a       R       Place of publication, distribution, etc.
            b       R       Name of publisher, distributor, etc.
            c       R       Date of publication, distribution, etc.
            d       NR      Plate or publisher's number for music (Pre-AACR 2)
            e       R       Place of manufacture
            f       R       Manufacturer
            g       R       Date of manufacture
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            261     NR      IMPRINT STATEMENT FOR FILMS (Pre-AACR 1 Revised)
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       R       Producing company
            b       R       Releasing company (primary distributor)
            d       R       Date of production, release, etc.
            e       R       Contractual producer
            f       R       Place of production, release, etc.
            6       NR      Linkage
            8       R       Field link and sequence number

            262     NR      IMPRINT STATEMENT FOR SOUND RECORDINGS (Pre-AACR 2)
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Place of production, release, etc.
            b       NR      Publisher or trade name
            c       NR      Date of production, release, etc.
            k       NR      Serial identification
            l       NR      Matrix and/or take number
            6       NR      Linkage
            8       R       Field link and sequence number

            263     NR      PROJECTED PUBLICATION DATE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Projected publication date
            6       NR      Linkage
            8       R       Field link and sequence number

            264     R       PRODUCTION, PUBLICATION, DISTRIBUTION, MANUFACTURE, AND COPYRIGHT NOTICE
            ind1    b23     Sequence of statements
            ind2    01234   Function of entity
            a       R       Place of production, publication, distribution, manufacture
            b       R       Name of producer, publisher, distributor, manufacturer
            c       R       Date of production, publication, distribution, manufacture, or copyright notice
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            270     R       ADDRESS
            ind1    b12     Level
            ind2    b07     Type of address
            a       R       Address
            b       NR      City
            c       NR      State or province
            d       NR      Country
            e       NR      Postal code
            f       NR      Terms preceding attention name
            g       NR      Attention name
            h       NR      Attention position
            i       NR      Type of address
            j       R       Specialized telephone number
            k       R       Telephone number
            l       R       Fax number
            m       R       Electronic mail address
            n       R       TDD or TTY number
            p       R       Contact person
            q       R       Title of contact person
            r       R       Hours
            z       R       Public note
            4       R       Relationship
            6       NR      Linkage
            8       R       Field link and sequence number

            300     R       PHYSICAL DESCRIPTION
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       R       Extent
            b       NR      Other physical details
            c       R       Dimensions
            e       NR      Accompanying material
            f       R       Type of unit
            g       R       Size of unit
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            306     NR      PLAYING TIME
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       R       Playing time
            6       NR      Linkage
            8       R       Field link and sequence number

            307     R       HOURS, ETC.
            ind1    b8      Display constant controller
            ind2    blank   Undefined
            a       NR      Hours
            b       NR      Additional information
            6       NR      Linkage
            8       R       Field link and sequence number

            310     NR      CURRENT PUBLICATION FREQUENCY
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Current publication frequency
            b       NR      Date of current publication frequency
            0       NR      Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source
            6       NR      Linkage
            8       R       Field link and sequence number

            321     R       FORMER PUBLICATION FREQUENCY
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Former publication frequency
            b       NR      Dates of former publication frequency
            0       NR      Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source
            6       NR      Linkage
            8       R       Field link and sequence number

            336     R       CONTENT TYPE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       R       Content type term
            b       R       Content type code
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            337     R       MEDIA TYPE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       R       Media type term
            b       R       Media type code
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            338     R       CARRIER TYPE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       R       Carrier type term
            b       R       Carrier type code
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            340     R       PHYSICAL MEDIUM
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       R       Material base and configuration
            b       R       Dimensions
            c       R       Materials applied to surface
            d       R       Information recording technique
            e       R       Support
            f       R       Production rate/ratio
            g       R       Color content
            h       R       Location within medium
            i       R       Technical specifications of medium
            j       R       Generation
            k       R       Layout
            m       R       Book format
            n       R       Font size
            o       R       Polarity
            0       R       Authority record control number or standard number
            2       NR      Source
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            341     R       ACCESSIBILITY CONTENT
            ind1    b01     Application
            ind2    blank   Undefined
            a       NR      Content access mode
            b       R       Textual assistive features
            c       R       Visual assistive features
            d       R       Auditory assistive features
            e       R       Tactile assistive features
            2       NR      Source
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            342     R       GEOSPATIAL REFERENCE DATA
            ind1    01      Geospatial reference dimension
            ind2    012345678    Geospatial reference method
            a       NR      Name
            b       NR      Coordinate or distance units
            c       NR      Latitude resolution
            d       NR      Longitude resolution
            e       R       Standard parallel or oblique line latitude
            f       R       Oblique line longitude
            g       NR      Longitude of central meridian or projection center
            h       NR      Latitude of projection origin or projection center
            i       NR      False easting
            j       NR      False northing
            k       NR      Scale factor
            l       NR      Height of perspective point above surface
            m       NR      Azimuthal angle
            n       NR      Azimuth measure point longitude or straight vertical longitude from pole
            o       NR      Landsat number and path number
            p       NR      Zone identifier
            q       NR      Ellipsoid name
            r       NR      Semi-major axis
            s       NR      Denominator of flattening ratio
            t       NR      Vertical resolution
            u       NR      Vertical encoding method
            v       NR      Local planar, local, or other projection or grid description
            w       NR      Local planar or local georeference information
            2       NR      Reference method used
            6       NR      Linkage
            8       R       Field link and sequence number

            343     R       PLANAR COORDINATE DATA
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Planar coordinate encoding method
            b       NR      Planar distance units
            c       NR      Abscissa resolution
            d       NR      Ordinate resolution
            e       NR      Distance resolution
            f       NR      Bearing resolution
            g       NR      Bearing units
            h       NR      Bearing reference direction
            i       NR      Bearing reference meridian
            6       NR      Linkage
            8       R       Field link and sequence number

            344     R       SOUND CHARACTERISTICS
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       R       Type of recording
            b       R       Recording medium
            c       R       Playing speed
            d       R       Groove characteristic
            e       R       Track configuration
            f       R       Tape configuration
            g       R       Configuration of playback channels
            h       R       Special playback characteristics
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            345     R       PROJECTION CHARACTERISTICS OF MOVING IMAGE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       R       Presentation format
            b       R       Projection speed
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            346     R       VIDEO CHARACTERISTICS
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       R       Video format
            b       R       Broadcast standard
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            347     R       DIGITAL FILE CHARACTERISTICS
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       R       File type
            b       R       Encoding format
            c       R       File size
            d       R       Resolution
            e       R       Regional encoding
            f       R       Encoded bitrate
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            348     R       FORMAT OF NOTATED MUSIC
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       R       Format of notated music term
            b       R       Format of notated music code
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of term
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            351     R       ORGANIZATION AND ARRANGEMENT OF MATERIALS
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       R       Organization
            b       R       Arrangement
            c       NR      Hierarchical level
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            352     R       DIGITAL GRAPHIC REPRESENTATION
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Direct reference method
            b       R       Object type
            c       R       Object count
            d       NR      Row count
            e       NR      Column count
            f       NR      Vertical count
            g       NR      VPF topology level
            i       NR      Indirect reference description
            q       R       Format of the digital image
            6       NR      Linkage
            8       R       Field link and sequence number

            355     R       SECURITY CLASSIFICATION CONTROL
            ind1    0123458    Controlled element
            ind2    blank   Undefined
            a       NR      Security classification
            b       R       Handling instructions
            c       R       External dissemination information
            d       NR      Downgrading or declassification event
            e       NR      Classification system
            f       NR      Country of origin code
            g       NR      Downgrading date
            h       NR      Declassification date
            j       R       Authorization
            6       NR      Linkage
            8       R       Field link and sequence number

            357     NR      ORIGINATOR DISSEMINATION CONTROL
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Originator control term
            b       R       Originating agency
            c       R       Authorized recipients of material
            g       R       Other restrictions
            6       NR      Linkage
            8       R       Field link and sequence number

            362     R       DATES OF PUBLICATION AND/OR SEQUENTIAL DESIGNATION
            ind1    01      Format of date
            ind2    blank   Undefined
            a       NR      Dates of publication and/or sequential designation
            z       NR      Source of information
            6       NR      Linkage
            8       R       Field link and sequence number

            363     R       NORMALIZED DATE AND SEQUENTIAL DESIGNATION
            ind1    b01     Start/End designator
            ind2    b01     State of issuance
            a       NR      First level of enumeration
            b       NR      Second level of enumeration
            c       NR      Third level of enumeration
            d       NR      Fourth level of enumeration
            e       NR      Fifth level of enumeration
            f       NR      Sixth level of enumeration
            g       NR      Alternative numbering scheme, first level of enumeration
            h       NR      Alternative numbering scheme, second level of enumeration
            i       NR      First level of chronology
            j       NR      Second level of chronology
            k       NR      Third level of chronology
            l       NR      Fourth level of chronology
            m       NR      Alternative numbering scheme, chronology
            u       NR      First level textual designation
            v       NR      First level of chronology, issuance
            x       R       Nonpublic note
            z       R       Public note
            6       NR      Linkage
            8       NR      Field link and sequence number

            365     R       TRADE PRICE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Price type code
            b       NR      Price amount
            c       NR      Currency code
            d       NR      Unit of pricing
            e       NR      Price note
            f       NR      Price effective from
            g       NR      Price effective until
            h       NR      Tax rate 1
            i       NR      Tax rate 2
            j       NR      ISO country code
            k       NR      MARC country code
            m       NR      Identification of pricing entity
            2       NR      Source of price type code
            6       NR      Linkage
            8       R       Field link and sequence number

            366     R       TRADE AVAILABILITY INFORMATION
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Publishers' compressed title identification
            b       NR      Detailed date of publication
            c       NR      Availability status code
            d       NR      Expected next availability date
            e       NR      Note
            f       NR      Publishers' discount category
            g       NR      Date made out of print
            j       NR      ISO country code
            k       NR      MARC country code
            m       NR      Identification of agency
            2       NR      Source of availability status code
            6       NR      Linkage
            8       R       Field link and sequence number

            370     R       ASSOCIATED PLACE
            ind1    blank   Undefined
            ind2    blank   Undefined
            c       R       Associated country
            f       R       Other associated place
            g       R       Place of origin of work or expression
            i       R       Relationship information
            s       NR      Start period
            t       NR      End period
            u       R       Uniform Resource Identifier
            v       R       Source of information
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of term
            3       NR      Materials specified
            4       R       Relationship
            6       NR      Linkage
            8       R       Field link and sequence number

            377     R       ASSOCIATED LANGUAGE
            ind1    blank   Undefined
            ind2    b7      Source of code
            a       R       Language code
            l       R       Language term
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            380     R       FORM OF WORK
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       R       Form of work
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of term
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            381     R       OTHER DISTINGUISHING CHARACTERISTICS OF WORK OR EXPRESSION
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       R       Other distinguishing characteristic
            u       R       Uniform Resource Identifier
            v       R       Source of information
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of term
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            382     R       MEDIUM OF PERFORMANCE
            ind1    b01     Display constant controller
            ind2    b01     Access control
            a       R       Medium of performance
            b       R       Soloist
            d       R       Doubling instrument
            e       R       Number of ensembles of the same type
            n       R       Number of performers of the same medium
            p       R       Alternative medium of performance
            r       NR      Total number of individuals performing alongside ensembles
            s       NR      Total number of performers
            t       NR      Total number of ensembles
            v       R       Note
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of term
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            383     R       NUMERIC DESIGNATION OF MUSICAL WORK
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       R       Serial number
            b       R       Opus number
            c       R       Thematic index number
            d       NR      Thematic index code
            e       NR      Publisher associated with opus number
            2       NR      Source
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            384     R       KEY
            ind1    b01     Key type
            ind2    blank   Undefined
            a       NR      Key
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            385     R       AUDIENCE CHARACTERISTICS
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       R       Audience term
            b       R       Audience code
            m       NR      Demographic group term
            n       NR      Demographic group code
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            386     R       CREATOR/CONTRIBUTOR CHARACTERISTICS
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       R       Creator/contributor term
            b       R       Creator/contributor code
            i       R       Relationship information
            m       NR      Demographic group term
            n       NR      Demographic group code
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source
            3       NR      Materials specified
            4       R       Relationship
            6       NR      Linkage
            8       R       Field link and sequence number

            388     R       TIME PERIOD OF CREATION
            ind1    b12     Type of time period
            ind2    blank   Undefined
            a       R       Time period of creation term
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of term
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            400     R       SERIES STATEMENT/ADDED ENTRY--PERSONAL NAME
            ind1    013     Type of personal name entry element
            ind2    01      Pronoun represents main entry
            a       NR      Personal name
            b       NR      Numeration
            c       R       Titles and other words associated with a name
            d       NR      Dates associated with a name
            e       R       Relator term
            f       NR      Date of a work
            g       NR      Miscellaneous information
            k       R       Form subheading
            l       NR      Language of a work
            n       R       Number of part/section of a work
            p       R       Name of part/section of a work
            t       NR      Title of a work
            u       NR      Affiliation
            v       NR      Volume number/sequential designation
            x       NR      International Standard Serial Number
            4       R       Relator code
            6       NR      Linkage
            8       R       Field link and sequence number

            410     R       SERIES STATEMENT/ADDED ENTRY--CORPORATE NAME
            ind1    012     Type of corporate name entry element
            ind2    01      Pronoun represents main entry
            a       NR      Corporate name or jurisdiction name as entry element
            b       R       Subordinate unit
            c       NR      Location of meeting
            d       R       Date of meeting or treaty signing
            e       R       Relator term
            f       NR      Date of a work
            g       NR      Miscellaneous information
            k       R       Form subheading
            l       NR      Language of a work
            n       R       Number of part/section/meeting
            p       R       Name of part/section of a work
            t       NR      Title of a work
            u       NR      Affiliation
            v       NR      Volume number/sequential designation
            x       NR      International Standard Serial Number
            4       R       Relator code
            6       NR      Linkage
            8       R       Field link and sequence number

            411     R       SERIES STATEMENT/ADDED ENTRY--MEETING NAME
            ind1    012     Type of meeting name entry element
            ind2    01      Pronoun represents main entry
            a       NR      Meeting name or jurisdiction name as entry element
            c       NR      Location of meeting
            d       NR      Date of meeting
            e       R       Subordinate unit
            f       NR      Date of a work
            g       NR      Miscellaneous information
            k       R       Form subheading
            l       NR      Language of a work
            n       R       Number of part/section/meeting
            p       R       Name of part/section of a work
            q       NR      Name of meeting following jurisdiction name entry element
            t       NR      Title of a work
            u       NR      Affiliation
            v       NR      Volume number/sequential designation
            x       NR      International Standard Serial Number
            4       R       Relator code
            6       NR      Linkage
            8       R       Field link and sequence number

            490     R       SERIES STATEMENT
            ind1    01      Series tracing policy
            ind2    blank   Undefined
            a       R       Series statement
            l       NR      Library of Congress call number
            v       R       Volume number/sequential designation
            x       R       International Standard Serial Number
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            500     R       GENERAL NOTE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      General note
            3       NR      Materials specified
            5       NR      Institution to which field applies
            6       NR      Linkage
            8       R       Field link and sequence number

            501     R       WITH NOTE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      With note
            5       NR      Institution to which field applies
            6       NR      Linkage
            8       R       Field link and sequence number

            502     R       DISSERTATION NOTE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Dissertation note
            b       NR      Degree type
            c       NR      Name of granting institution
            d       NR      Year of degree granted
            g       R       Miscellaneous information
            o       R       Dissertation identifier
            6       NR      Linkage
            8       R       Field link and sequence number

            504     R       BIBLIOGRAPHY, ETC. NOTE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Bibliography, etc. note
            b       NR      Number of references
            6       NR      Linkage
            8       R       Field link and sequence number

            505     R       FORMATTED CONTENTS NOTE
            ind1    0128    Display constant controller
            ind2    b0      Level of content designation
            a       NR      Formatted contents note
            g       R       Miscellaneous information
            r       R       Statement of responsibility
            t       R       Title
            u       R       Uniform Resource Identifier
            6       NR      Linkage
            8       R       Field link and sequence number

            506     R       RESTRICTIONS ON ACCESS NOTE
            ind1    b01     Restriction
            ind2    blank   Undefined
            a       NR      Terms governing access
            b       R       Jurisdiction
            c       R       Physical access provisions
            d       R       Authorized users
            e       R       Authorization
            f       R       Standardized terminology for access restiction
            g       R       Availability date
            q       R       Supplying agency
            u       R       Uniform Resource Identifier
            2       NR      Source of term
            3       NR      Materials specified
            5       NR      Institution to which field applies
            6       NR      Linkage
            8       R       Field link and sequence number

            507     NR      SCALE NOTE FOR GRAPHIC MATERIAL
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Representative fraction of scale note
            b       NR      Remainder of scale note
            6       NR      Linkage
            8       R       Field link and sequence number

            508     R       CREATION/PRODUCTION CREDITS NOTE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Creation/production credits note
            6       NR      Linkage
            8       R       Field link and sequence number

            510     R       CITATION/REFERENCES NOTE
            ind1    01234   Coverage/location in source
            ind2    blank   Undefined
            a       NR      Name of source
            b       NR      Coverage of source
            c       NR      Location within source
            u       R       Uniform Resource Identifier
            x       NR      International Standard Serial Number
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            511     R       PARTICIPANT OR PERFORMER NOTE
            ind1    01      Display constant controller
            ind2    blank   Undefined
            a       NR      Participant or performer note
            6       NR      Linkage
            8       R       Field link and sequence number

            513     R       TYPE OF REPORT AND PERIOD COVERED NOTE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Type of report
            b       NR      Period covered
            6       NR      Linkage
            8       R       Field link and sequence number

            514     NR      DATA QUALITY NOTE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Attribute accuracy report
            b       R       Attribute accuracy value
            c       R       Attribute accuracy explanation
            d       NR      Logical consistency report
            e       NR      Completeness report
            f       NR      Horizontal position accuracy report
            g       R       Horizontal position accuracy value
            h       R       Horizontal position accuracy explanation
            i       NR      Vertical positional accuracy report
            j       R       Vertical positional accuracy value
            k       R       Vertical positional accuracy explanation
            m       NR      Cloud cover
            u       R       Uniform Resource Identifier
            z       R       Display note
            6       NR      Linkage
            8       R       Field link and sequence number

            515     R       NUMBERING PECULIARITIES NOTE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Numbering peculiarities note
            6       NR      Linkage
            8       R       Field link and sequence number

            516     R       TYPE OF COMPUTER FILE OR DATA NOTE
            ind1    b8      Display constant controller
            ind2    blank   Undefined
            a       NR      Type of computer file or data note
            6       NR      Linkage
            8       R       Field link and sequence number

            518     R       DATE/TIME AND PLACE OF AN EVENT NOTE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Date/time and place of an event note
            d       R       Date of event
            o       R       Other event information
            p       R       Place of event
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       R       Source of term
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            520     R       SUMMARY, ETC.
            ind1    b012348    Display constant controller
            ind2    blank   Undefined
            a       NR      Summary, etc. note
            b       NR      Expansion of summary note
            c       NR      Assigning agency
            u       R       Uniform Resource Identifier
            2       NR      Source
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            521     R       TARGET AUDIENCE NOTE
            ind1    b012348    Display constant controller
            ind2    blank   Undefined
            a       R       Target audience note
            b       NR      Source
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            522     R       GEOGRAPHIC COVERAGE NOTE
            ind1    b8      Display constant controller
            ind2    blank   Undefined
            a       NR      Geographic coverage note
            6       NR      Linkage
            8       R       Field link and sequence number

            524     R       PREFERRED CITATION OF DESCRIBED MATERIALS NOTE
            ind1    b8      Display constant controller
            ind2    blank   Undefined
            a       NR      Preferred citation of described materials note
            2       NR      Source of schema used
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            525     R       SUPPLEMENT NOTE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Supplement note
            6       NR      Linkage
            8       R       Field link and sequence number

            526     R       STUDY PROGRAM INFORMATION NOTE
            ind1    08      Display constant controller
            ind2    blank   Undefined
            a       NR      Program name
            b       NR      Interest level
            c       NR      Reading level
            d       NR      Title point value
            i       NR      Display text
            x       R       Nonpublic note
            z       R       Public note
            5       NR      Institution to which field applies
            6       NR      Linkage
            8       R       Field link and sequence number

            530     R       ADDITIONAL PHYSICAL FORM AVAILABLE NOTE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Additional physical form available note
            b       NR      Availability source
            c       NR      Availability conditions
            d       NR      Order number
            u       R       Uniform Resource Identifier
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            532     R       ACCESSIBILITY NOTE
            ind1    0128    Display constant controller
            ind2    blank   Undefined
            a       NR      Summary of accessibility
            6       NR      Linkage
            8       R       Field link and sequence number

            533     R       REPRODUCTION NOTE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Type of reproduction
            b       R       Place of reproduction
            c       R       Agency responsible for reproduction
            d       NR      Date of reproduction
            e       NR      Physical description of reproduction
            f       R       Series statement of reproduction
            m       R       Dates and/or sequential designation of issues reproduced
            n       R       Note about reproduction
            3       NR      Materials specified
            5       NR      Institution to which field applies
            6       NR      Linkage
            7       NR      Fixed-length data elements of reproduction
            8       R       Field link and sequence number

            534     R       ORIGINAL VERSION NOTE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Main entry of original
            b       NR      Edition statement of original
            c       NR      Publication, distribution, etc. of original
            e       NR      Physical description, etc. of original
            f       R       Series statement of original
            k       R       Key title of original
            l       NR      Location of original
            m       NR      Material specific details
            n       R       Note about original
            o       R       Other resource identifier
            p       NR      Introductory phrase
            t       NR      Title statement of original
            x       R       International Standard Serial Number
            z       R       International Standard Book Number
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            535     R       LOCATION OF ORIGINALS/DUPLICATES NOTE
            ind1    12      Additional information about custodian
            ind2    blank   Undefined
            a       NR      Custodian
            b       R       Postal address
            c       R       Country
            d       R       Telecommunications address
            g       NR      Repository location code
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            536     R       FUNDING INFORMATION NOTE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Text of note
            b       R       Contract number
            c       R       Grant number
            d       R       Undifferentiated number
            e       R       Program element number
            f       R       Project number
            g       R       Task number
            h       R       Work unit number
            6       NR      Linkage
            8       R       Field link and sequence number

            538     R       SYSTEM DETAILS NOTE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      System details note
            i       NR      Display text
            u       R       Uniform Resource Identifier
            3       NR      Materials specified
            5       NR      Institution to which field applies
            6       NR      Linkage
            8       R       Field link and sequence number

            540     R       TERMS GOVERNING USE AND REPRODUCTION NOTE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Terms governing use and reproduction
            b       NR      Jurisdiction
            c       NR      Authorization
            d       NR      Authorized users
            f       R       Use and reproduction rights
            g       R       Availability date
            q       NR      Supplying agency
            u       R       Uniform Resource Identifier
            2       NR      Source of term
            3       NR      Materials specified
            5       NR      Institution to which field applies
            6       NR      Linkage
            8       R       Field link and sequence number

            541     R       IMMEDIATE SOURCE OF ACQUISITION NOTE
            ind1    b01     Privacy
            ind2    blank   Undefined
            a       NR      Source of acquisition
            b       NR      Address
            c       NR      Method of acquisition
            d       NR      Date of acquisition
            e       NR      Accession number
            f       NR      Owner
            h       NR      Purchase price
            n       R       Extent
            o       R       Type of unit
            3       NR      Materials specified
            5       NR      Institution to which field applies
            6       NR      Linkage
            8       R       Field link and sequence number

            542     R       INFORMATION RELATING TO COPYRIGHT STATUS
            ind1    b01     Privacy
            ind2    blank   Undefined
            a       NR      Personal creator
            b       NR      Personal creator death date
            c       NR      Corporate creator
            d       R       Copyright holder
            e       R       Copyright holder contact information
            f       R       Copyright statement
            g       NR      Copyright date
            h       R       Copyright renewal date
            i       NR      Publication date
            j       NR      Creation date
            k       R       Publisher
            l       NR      Copyright status
            m       NR      Publication status
            n       R       Note
            o       NR      Research date
            p       R       Country of publication or creation
            q       NR      Supplying agency
            r       NR      Jurisdiction of copyright assessment
            s       NR      Source of information
            u       R       Uniform Resource Identifier
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            544     R       LOCATION OF OTHER ARCHIVAL MATERIALS NOTE
            ind1    b01     Relationship
            ind2    blank   Undefined
            a       R       Custodian
            b       R       Address
            c       R       Country
            d       R       Title
            e       R       Provenance
            n       R       Note
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            545     R       BIOGRAPHICAL OR HISTORICAL DATA
            ind1    b01     Type of data
            ind2    blank   Undefined
            a       NR      Biographical or historical note
            b       NR      Expansion
            u       R       Uniform Resource Identifier
            6       NR      Linkage
            8       R       Field link and sequence number

            546     R       LANGUAGE NOTE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Language note
            b       R       Information code or alphabet
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            547     R       FORMER TITLE COMPLEXITY NOTE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Former title complexity note
            6       NR      Linkage
            8       R       Field link and sequence number

            550     R       ISSUING BODY NOTE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Issuing body note
            6       NR      Linkage
            8       R       Field link and sequence number

            552     R       ENTITY AND ATTRIBUTE INFORMATION NOTE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Entity type label
            b       NR      Entity type definition and source
            c       NR      Attribute label
            d       NR      Attribute definition and source
            e       R       Enumerated domain value
            f       R       Enumerated domain value definition and source
            g       NR      Range domain minimum and maximum
            h       NR      Codeset name and source
            i       NR      Unrepresentable domain
            j       NR      Attribute units of measurement and resolution
            k       NR      Beginning date and ending date of attribute values
            l       NR      Attribute value accuracy
            m       NR      Attribute value accuracy explanation
            n       NR      Attribute measurement frequency
            o       R       Entity and attribute overview
            p       R       Entity and attribute detail citation
            u       R       Uniform Resource Identifier
            z       R       Display note
            6       NR      Linkage
            8       R       Field link and sequence number

            555     R       CUMULATIVE INDEX/FINDING AIDS NOTE
            ind1    b08     Display constant controller
            ind2    blank   Undefined
            a       NR      Cumulative index/finding aids note
            b       R       Availability source
            c       NR      Degree of control
            d       NR      Bibliographic reference
            u       R       Uniform Resource Identifier
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            556     R       INFORMATION ABOUT DOCUMENTATION NOTE
            ind1    b8      Display constant controller
            ind2    blank   Undefined
            a       NR      Information about documentation note
            z       R       International Standard Book Number
            6       NR      Linkage
            8       R       Field link and sequence number

            561     R       OWNERSHIP AND CUSTODIAL HISTORY
            ind1    b01     Privacy
            ind2    blank   Undefined
            a       NR      History
            u       R       Uniform Resource Identifier
            3       NR      Materials specified
            5       NR      Institution to which field applies
            6       NR      Linkage
            8       R       Field link and sequence number

            562     R       COPY AND VERSION IDENTIFICATION NOTE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       R       Identifying markings
            b       R       Copy identification
            c       R       Version identification
            d       R       Presentation format
            e       R       Number of copies
            3       NR      Materials specified
            5       NR      Institution to which field applies
            6       NR      Linkage
            8       R       Field link and sequence number

            563     R       BINDING INFORMATION
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Binding note
            u       R       Uniform Resource Identifier
            3       NR      Materials specified
            5       NR      Institution to which field applies
            6       NR      Linkage
            8       R       Field link and sequence number

            565     R       CASE FILE CHARACTERISTICS NOTE
            ind1    b08     Display constant controller
            ind2    blank   Undefined
            a       NR      Number of cases/variables
            b       R       Name of variable
            c       R       Unit of analysis
            d       R       Universe of data
            e       R       Filing scheme or code
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            567     R       METHODOLOGY NOTE
            ind1    b8      Display constant controller
            ind2    blank   Undefined
            a       NR      Methodology note
            b       R       Controlled term
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of term
            6       NR      Linkage
            8       R       Field link and sequence number

            580     R       LINKING ENTRY COMPLEXITY NOTE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Linking entry complexity note
            6       NR      Linkage
            8       R       Field link and sequence number

            581     R       PUBLICATIONS ABOUT DESCRIBED MATERIALS NOTE
            ind1    b8      Display constant controller
            ind2    blank   Undefined
            a       NR      Publications about described materials note
            z       R       International Standard Book Number
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            583     R       ACTION NOTE
            ind1    b01     Privacy
            ind2    blank   Undefined
            a       NR      Action
            b       R       Action identification
            c       R       Time/date of action
            d       R       Action interval
            e       R       Contingency for action
            f       R       Authorization
            h       R       Jurisdiction
            i       R       Method of action
            j       R       Site of action
            k       R       Action agent
            l       R       Status
            n       R       Extent
            o       R       Type of unit
            u       R       Uniform Resource Identifier
            x       R       Nonpublic note
            z       R       Public note
            2       NR      Source of term
            3       NR      Materials specified
            5       NR      Institution to which field applies
            6       NR      Linkage
            8       R       Field link and sequence number

            584     R       ACCUMULATION AND FREQUENCY OF USE NOTE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       R       Accumulation
            b       R       Frequency of use
            3       NR      Materials specified
            5       NR      Institution to which field applies
            6       NR      Linkage
            8       R       Field link and sequence number

            585     R       EXHIBITIONS NOTE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Exhibitions note
            3       NR      Materials specified
            5       NR      Institution to which field applies
            6       NR      Linkage
            8       R       Field link and sequence number

            586     R       AWARDS NOTE
            ind1    b8      Display constant controller
            ind2    blank   Undefined
            a       NR      Awards note
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            588     R       SOURCE OF DESCRIPTION NOTE
            ind1    b01     Display constant controller
            ind2    blank   Undefined
            a       NR      Source of description note
            5       NR      Institution to which field applies
            6       NR      Linkage
            8       R       Field link and sequence number

            600     R       SUBJECT ADDED ENTRY--PERSONAL NAME
            ind1    013     Type of personal name entry element
            ind2    01234567    Thesaurus
            a       NR      Personal name
            b       NR      Numeration
            c       R       Titles and other words associated with a name
            d       NR      Dates associated with a name
            e       R       Relator term
            f       NR      Date of a work
            g       R       Miscellaneous information
            h       NR      Medium
            j       R       Attribution qualifier
            k       R       Form subheading
            l       NR      Language of a work
            m       R       Medium of performance for music
            n       R       Number of part/section of a work
            o       NR      Arranged statement for music
            p       R       Name of part/section of a work
            q       NR      Fuller form of name
            r       NR      Key for music
            s       R       Version
            t       NR      Title of a work
            u       NR      Affiliation
            v       R       Form subdivision
            x       R       General subdivision
            y       R       Chronological subdivision
            z       R       Geographic subdivision
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of heading or term
            3       NR      Materials specified
            4       R       Relationship
            6       NR      Linkage
            8       R       Field link and sequence number

            610     R       SUBJECT ADDED ENTRY--CORPORATE NAME
            ind1    012     Type of corporate name entry element
            ind2    01234567    Thesaurus
            a       NR      Corporate name or jurisdiction name as entry element
            b       R       Subordinate unit
            c       R       Location of meeting
            d       R       Date of meeting or treaty signing
            e       R       Relator term
            f       NR      Date of a work
            g       R       Miscellaneous information
            h       NR      Medium
            k       R       Form subheading
            l       NR      Language of a work
            m       R       Medium of performance for music
            n       R       Number of part/section/meeting
            o       NR      Arranged statement for music
            p       R       Name of part/section of a work
            r       NR      Key for music
            s       R       Version
            t       NR      Title of a work
            u       NR      Affiliation
            v       R       Form subdivision
            x       R       General subdivision
            y       R       Chronological subdivision
            z       R       Geographic subdivision
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of heading or term
            3       NR      Materials specified
            4       R       Relationship
            6       NR      Linkage
            8       R       Field link and sequence number

            611     R       SUBJECT ADDED ENTRY--MEETING NAME
            ind1    012     Type of meeting name entry element
            ind2    01234567    Thesaurus
            a       NR      Meeting name or jurisdiction name as entry element
            c       R       Location of meeting
            d       R       Date of meeting or treaty signing
            e       R       Subordinate unit
            f       NR      Date of a work
            g       R       Miscellaneous information
            h       NR      Medium
            j       R       Relator term
            k       R       Form subheading
            l       NR      Language of a work
            n       R       Number of part/section/meeting
            p       R       Name of part/section of a work
            q       NR      Name of meeting following jurisdiction name entry element
            s       R       Version
            t       NR      Title of a work
            u       NR      Affiliation
            v       R       Form subdivision
            x       R       General subdivision
            y       R       Chronological subdivision
            z       R       Geographic subdivision
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of heading or term
            3       NR      Materials specified
            4       R       Relationship
            6       NR      Linkage
            8       R       Field link and sequence number

            630     R       SUBJECT ADDED ENTRY--UNIFORM TITLE
            ind1    0-9     Nonfiling characters
            ind2    01234567    Thesaurus
            a       NR      Uniform title
            d       R       Date of treaty signing
            e       R       Relator term
            f       NR      Date of a work
            g       R       Miscellaneous information
            h       NR      Medium
            k       R       Form subheading
            l       NR      Language of a work
            m       R       Medium of performance for music
            n       R       Number of part/section of a work
            o       NR      Arranged statement for music
            p       R       Name of part/section of a work
            r       NR      Key for music
            s       R       Version
            t       NR      Title of a work
            v       R       Form subdivision
            x       R       General subdivision
            y       R       Chronological subdivision
            z       R       Geographic subdivision
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of heading or term
            3       NR      Materials specified
            4       R       Relationship
            6       NR      Linkage
            8       R       Field link and sequence number

            647     R       SUBJECT ADDED ENTRY--NAMED EVENT
            ind1    blank   Undefined
            ind2    01234567    Thesaurus
            a       NR      Named event
            c       R       Location of named event
            d       NR      Date of named event
            g       R       Miscellaneous information
            v       R       Form subdivision
            x       R       General subdivision
            y       R       Chronological subdivision
            z       R       Geographic subdivision
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of heading or term
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            648     R       SUBJECT ADDED ENTRY--CHRONOLOGICAL TERM
            ind1    blank   Undefined
            ind2    01234567    Thesaurus
            a       NR      Chronological term
            v       R       Form subdivision
            x       R       General subdivision
            y       R       Chronological subdivision
            z       R       Geographic subdivision
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of heading or term
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            650     R       SUBJECT ADDED ENTRY--TOPICAL TERM
            ind1    b012    Level of subject
            ind2    01234567    Thesaurus
            a       NR      Topical term or geographic name as entry element
            b       NR      Topical term following geographic name as entry element
            c       NR      Location of event
            d       NR      Active dates
            e       NR      Relator term
            g       R       Miscellaneous information
            v       R       Form subdivision
            x       R       General subdivision
            y       R       Chronological subdivision
            z       R       Geographic subdivision
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of heading or term
            3       NR      Materials specified
            4       R       Relationship
            6       NR      Linkage
            8       R       Field link and sequence number

            651     R       SUBJECT ADDED ENTRY--GEOGRAPHIC NAME
            ind1    blank   Undefined
            ind2    01234567    Thesaurus
            a       NR      Geographic name
            e       R       Relator term
            g       R       Miscellaneous information
            v       R       Form subdivision
            x       R       General subdivision
            y       R       Chronological subdivision
            z       R       Geographic subdivision
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of heading or term
            3       NR      Materials specified
            4       R       Relationship
            6       NR      Linkage
            8       R       Field link and sequence number

            653     R       INDEX TERM--UNCONTROLLED
            ind1    b012    Level of index term
            ind2    b0123456   Type of term or name
            a       R       Uncontrolled term
            6       NR      Linkage
            8       R       Field link and sequence number

            654     R       SUBJECT ADDED ENTRY--FACETED TOPICAL TERMS
            ind1    b012    Level of subject
            ind2    blank   Undefined
            a       R       Focus term
            b       R       Non-focus term
            c       R       Facet/hierarchy designation
            e       R       Relator term
            v       R       Form subdivision
            y       R       Chronological subdivision
            z       R       Geographic subdivision
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of heading or term
            3       NR      Materials specified
            4       R       Relationship
            6       NR      Linkage
            8       R       Field link and sequence number

            655     R       INDEX TERM--GENRE/FORM
            ind1    b0      Type of heading
            ind2    01234567    Thesaurus
            a       NR      Genre/form data or focus term
            b       R       Non-focus term
            c       R       Facet/hierarchy designation
            v       R       Form subdivision
            x       R       General subdivision
            y       R       Chronological subdivision
            z       R       Geographic subdivision
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of term
            3       NR      Materials specified
            5       NR      Institution to which field applies
            6       NR      Linkage
            8       R       Field link and sequence number

            656     R       INDEX TERM--OCCUPATION
            ind1    blank   Undefined
            ind2    7       Source of term
            a       NR      Occupation
            k       NR      Form
            v       R       Form subdivision
            x       R       General subdivision
            y       R       Chronological subdivision
            z       R       Geographic subdivision
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of term
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            657     R       INDEX TERM--FUNCTION
            ind1    blank   Undefined
            ind2    7       Source of term
            a       NR      Function
            v       R       Form subdivision
            x       R       General subdivision
            y       R       Chronological subdivision
            z       R       Geographic subdivision
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of term
            3       NR      Materials specified
            6       NR      Linkage
            8       R       Field link and sequence number

            658     R       INDEX TERM--CURRICULUM OBJECTIVE
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Main curriculum objective
            b       R       Subordinate curriculum objective
            c       NR      Curriculum code
            d       NR      Correlation factor
            2       NR      Source of term or code
            6       NR      Linkage
            8       R       Field link and sequence number

            662     R       SUBJECT ADDED ENTRY--HIERARCHICAL PLACE NAME
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       R       Country or larger entity
            b       NR      First-order political jurisdiction
            c       R       Intermediate political jurisdiction
            d       NR      City
            e       R       Relator term
            f       R       City subsection
            g       R       Other nonjurisdictional geographic region and feature
            h       R       Extraterrestrial area
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of heading or term
            4       R       Relationship
            6       NR      Linkage
            8       R       Field link and sequence number

            688     R       SUBJECT ADDED ENTRY--TYPE OF ENTITY UNSPECIFIED
            ind1    blank   Undefined
            ind2    b7      Source of name, title, or term
            a       NR      Name, title, or term
            e       R       Relator term
            g       R       Miscellaneous information
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of name, title, or term
            3       NR      Materials specified
            4       R       Relationship
            6       NR      Linkage
            8       R       Field link and sequence number

            700     R       ADDED ENTRY--PERSONAL NAME
            ind1    013     Type of personal name entry element
            ind2    b2      Type of added entry
            a       NR      Personal name
            b       NR      Numeration
            c       R       Titles and other words associated with a name
            d       NR      Dates associated with a name
            e       R       Relator term
            f       NR      Date of a work
            g       R       Miscellaneous information
            h       NR      Medium
            i       R       Relationship information
            j       R       Attribution qualifier
            k       R       Form subheading
            l       NR      Language of a work
            m       R       Medium of performance for music
            n       R       Number of part/section of a work
            o       NR      Arranged statement for music
            p       R       Name of part/section of a work
            q       NR      Fuller form of name
            r       NR      Key for music
            s       R       Version
            t       NR      Title of a work
            u       NR      Affiliation
            x       NR      International Standard Serial Number
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of heading or term
            3       NR      Materials specified
            4       R       Relationship
            5       NR      Institution to which field applies
            6       NR      Linkage
            8       R       Field link and sequence number

            710     R       ADDED ENTRY--CORPORATE NAME
            ind1    012     Type of corporate name entry element
            ind2    b2      Type of added entry
            a       NR      Corporate name or jurisdiction name as entry element
            b       R       Subordinate unit
            c       R       Location of meeting
            d       R       Date of meeting or treaty signing
            e       R       Relator term
            f       NR      Date of a work
            g       R       Miscellaneous information
            h       NR      Medium
            i       R       Relationship information
            k       R       Form subheading
            l       NR      Language of a work
            m       R       Medium of performance for music
            n       R       Number of part/section/meeting
            o       NR      Arranged statement for music
            p       R       Name of part/section of a work
            r       NR      Key for music
            s       R       Version
            t       NR      Title of a work
            u       NR      Affiliation
            x       NR      International Standard Serial Number
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of heading or term
            3       NR      Materials specified
            4       R       Relationship
            5       NR      Institution to which field applies
            6       NR      Linkage
            8       R       Field link and sequence number

            711     R       ADDED ENTRY--MEETING NAME
            ind1    012     Type of meeting name entry element
            ind2    b2      Type of added entry
            a       NR      Meeting name or jurisdiction name as entry element
            c       R       Location of meeting
            d       R       Date of meeting or treaty signing
            e       R       Subordinate unit
            f       NR      Date of a work
            g       R       Miscellaneous information
            h       NR      Medium
            i       R       Relationship information
            j       R       Relator term
            k       R       Form subheading
            l       NR      Language of a work
            n       R       Number of part/section/meeting
            p       R       Name of part/section of a work
            q       NR      Name of meeting following jurisdiction name entry element
            s       R       Version
            t       NR      Title of a work
            u       NR      Affiliation
            x       NR      International Standard Serial Number
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of heading or term
            3       NR      Materials specified
            4       R       Relationship
            5       NR      Institution to which field applies
            6       NR      Linkage
            8       R       Field link and sequence number

            720     R       ADDED ENTRY--UNCONTROLLED NAME
            ind1    b12     Type of name
            ind2    blank   Undefined
            a       NR      Name
            e       R       Relator term
            4       R       Relationship
            6       NR      Linkage
            8       R       Field link and sequence number

            730     R       ADDED ENTRY--UNIFORM TITLE
            ind1    0-9     Nonfiling characters
            ind2    b2      Type of added entry
            a       NR      Uniform title
            d       R       Date of treaty signing
            f       NR      Date of a work
            g       R       Miscellaneous information
            h       NR      Medium
            i       R       Relationship information
            k       R       Form subheading
            l       NR      Language of a work
            m       R       Medium of performance for music
            n       R       Number of part/section of a work
            o       NR      Arranged statement for music
            p       R       Name of part/section of a work
            r       NR      Key for music
            s       R       Version
            t       NR      Title of a work
            x       NR      International Standard Serial Number
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of heading or term
            3       NR      Materials specified
            4       R       Relationship
            5       NR      Institution to which field applies
            6       NR      Linkage
            8       R       Field link and sequence number

            740     R       ADDED ENTRY--UNCONTROLLED RELATED/ANALYTICAL TITLE
            ind1    0-9     Nonfiling characters
            ind2    b2      Type of added entry
            a       NR      Uncontrolled related/analytical title
            h       NR      Medium
            n       R       Number of part/section of a work
            p       R       Name of part/section of a work
            5       NR      Institution to which field applies
            6       NR      Linkage
            8       R       Field link and sequence number

            751     R       ADDED ENTRY--GEOGRAPHIC NAME
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Geographic name
            e       R       Relator term
            g       R       Miscellaneous information
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of heading or term
            3       NR      Materials specified
            4       R       Relationship
            6       NR      Linkage
            8       R       Field link and sequence number

            752     R       ADDED ENTRY--HIERARCHICAL PLACE NAME
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       R       Country or larger entity
            b       NR      First-order political jurisdiction
            c       R       Intermediate political jurisdiction
            d       NR      City
            e       R       Relator term
            f       R       City subsection
            g       R       Other nonjurisdictional geographic region and feature
            h       R       Extraterrestrial area
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of heading or term
            4       R       Relationship
            6       NR      Linkage
            8       R       Field link and sequence number

            753     R       SYSTEM DETAILS ACCESS TO COMPUTER FILES
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Make and model of machine
            b       NR      Programming language
            c       NR      Operating system
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of term
            6       NR      Linkage
            8       R       Field link and sequence number

            754     R       ADDED ENTRY--TAXONOMIC IDENTIFICATION
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       R       Taxonomic name
            c       R       Taxonomic category
            d       R       Common or alternative name
            x       R       Non-public note
            z       R       Public note
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of taxonomic identification
            6       NR      Linkage
            8       R       Field link and sequence number

            758     R       RESOURCE IDENTIFIER
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Label
            i       R       Relationship information
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of heading or term
            3       NR      Materials specified
            4       R       Relationship
            5       NR      Institution to which field applies
            6       NR      Linkage
            8       R       Field link and sequence number

            760     R       MAIN SERIES ENTRY
            ind1    01      Note controller
            ind2    b8      Display constant controller
            a       NR      Main entry heading
            b       NR      Edition
            c       NR      Qualifying information
            d       NR      Place, publisher, and date of publication
            g       R       Related parts
            h       NR      Physical description
            i       R       Relationship information
            m       NR      Material-specific details
            n       R       Note
            o       R       Other item identifier
            s       NR      Uniform title
            t       NR      Title
            w       R       Record control number
            x       NR      International Standard Serial Number
            y       NR      CODEN designation
            4       R       Relationship
            6       NR      Linkage
            7       NR      Control subfield
            8       R       Field link and sequence number

            762     R       SUBSERIES ENTRY
            ind1    01      Note controller
            ind2    b8      Display constant controller
            a       NR      Main entry heading
            b       NR      Edition
            c       NR      Qualifying information
            d       NR      Place, publisher, and date of publication
            g       R       Related parts
            h       NR      Physical description
            i       R       Relationship information
            m       NR      Material-specific details
            n       R       Note
            o       R       Other item identifier
            s       NR      Uniform title
            t       NR      Title
            w       R       Record control number
            x       NR      International Standard Serial Number
            y       NR      CODEN designation
            4       R       Relationship
            6       NR      Linkage
            7       NR      Control subfield
            8       R       Field link and sequence number

            765     R       ORIGINAL LANGUAGE ENTRY
            ind1    01      Note controller
            ind2    b8      Display constant controller
            a       NR      Main entry heading
            b       NR      Edition
            c       NR      Qualifying information
            d       NR      Place, publisher, and date of publication
            g       R       Related parts
            h       NR      Physical description
            i       R       Relationship information
            k       R       Series data for related item
            m       NR      Material-specific details
            n       R       Note
            o       R       Other item identifier
            r       R       Report number
            s       NR      Uniform title
            t       NR      Title
            u       NR      Standard Technical Report Number
            w       R       Record control number
            x       NR      International Standard Serial Number
            y       NR      CODEN designation
            z       R       International Standard Book Number
            4       R       Relationship
            6       NR      Linkage
            7       NR      Control subfield
            8       R       Field link and sequence number

            767     R       TRANSLATION ENTRY
            ind1    01      Note controller
            ind2    b8      Display constant controller
            a       NR      Main entry heading
            b       NR      Edition
            c       NR      Qualifying information
            d       NR      Place, publisher, and date of publication
            g       R       Related parts
            h       NR      Physical description
            i       R       Relationship information
            k       R       Series data for related item
            m       NR      Material-specific details
            n       R       Note
            o       R       Other item identifier
            r       R       Report number
            s       NR      Uniform title
            t       NR      Title
            u       NR      Standard Technical Report Number
            w       R       Record control number
            x       NR      International Standard Serial Number
            y       NR      CODEN designation
            z       R       International Standard Book Number
            4       R       Relationship
            6       NR      Linkage
            7       NR      Control subfield
            8       R       Field link and sequence number

            770     R       SUPPLEMENT/SPECIAL ISSUE ENTRY
            ind1    01      Note controller
            ind2    b8      Display constant controller
            a       NR      Main entry heading
            b       NR      Edition
            c       NR      Qualifying information
            d       NR      Place, publisher, and date of publication
            g       R       Related parts
            h       NR      Physical description
            i       R       Relationship information
            k       R       Series data for related item
            m       NR      Material-specific details
            n       R       Note
            o       R       Other item identifier
            r       R       Report number
            s       NR      Uniform title
            t       NR      Title
            u       NR      Standard Technical Report Number
            w       R       Record control number
            x       NR      International Standard Serial Number
            y       NR      CODEN designation
            z       R       International Standard Book Number
            4       R       Relationship
            6       NR      Linkage
            7       NR      Control subfield
            8       R       Field link and sequence number

            772     R       SUPPLEMENT PARENT ENTRY
            ind1    01      Note controller
            ind2    b08     Display constant controller
            a       NR      Main entry heading
            b       NR      Edition
            c       NR      Qualifying information
            d       NR      Place, publisher, and date of publication
            g       R       Related parts
            h       NR      Physical description
            i       R       Relationship information
            k       R       Series data for related item
            m       NR      Material-specific details
            n       R       Note
            o       R       Other item identifier
            r       R       Report number
            s       NR      Uniform title
            t       NR      Title
            u       NR      Standard Technical Report Number
            w       R       Record control number
            x       NR      International Standard Serial Number
            y       NR      CODEN designation
            z       R       International Stan dard Book Number
            4       R       Relationship
            6       NR      Linkage
            7       NR      Control subfield
            8       R       Field link and sequence number

            773     R       HOST ITEM ENTRY
            ind1    01      Note controller
            ind2    b8      Display constant controller
            a       NR      Main entry heading
            b       NR      Edition
            d       NR      Place, publisher, and date of publication
            g       R       Related parts
            h       NR      Physical description
            i       R       Relationship information
            k       R       Series data for related item
            m       NR      Material-specific details
            n       R       Note
            o       R       Other item identifier
            p       NR      Abbreviated title
            q       NR      Enumeration and first page
            r       R       Report number
            s       NR      Uniform title
            t       NR      Title
            u       NR      Standard Technical Report Number
            w       R       Record control number
            x       NR      International Standard Serial Number
            y       NR      CODEN designation
            z       R       International Standard Book Number
            3       NR      Materials specified
            4       R       Relationship
            6       NR      Linkage
            7       NR      Control subfield
            8       R       Field link and sequence number

            774     R       CONSTITUENT UNIT ENTRY
            ind1    01      Note controller
            ind2    b8      Display constant controller
            a       NR      Main entry heading
            b       NR      Edition
            c       NR      Qualifying information
            d       NR      Place, publisher, and date of publication
            g       R       Related parts
            h       NR      Physical description
            i       R       Relationship information
            k       R       Series data for related item
            m       NR      Material-specific details
            n       R       Note
            o       R       Other item identifier
            r       R       Report number
            s       NR      Uniform title
            t       NR      Title
            u       NR      Standard Technical Report Number
            w       R       Record control number
            x       NR      International Standard Serial Number
            y       NR      CODEN designation
            z       R       International Standard Book Number
            4       R       Relationship
            6       NR      Linkage
            7       NR      Control subfield
            8       R       Field link and sequence number

            775     R       OTHER EDITION ENTRY
            ind1    01      Note controller
            ind2    b8      Display constant controller
            a       NR      Main entry heading
            b       NR      Edition
            c       NR      Qualifying information
            d       NR      Place, publisher, and date of publication
            e       NR      Language code
            f       NR      Country code
            g       R       Related parts
            h       NR      Physical description
            i       R       Relationship information
            k       R       Series data for related item
            m       NR      Material-specific details
            n       R       Note
            o       R       Other item identifier
            r       R       Report number
            s       NR      Uniform title
            t       NR      Title
            u       NR      Standard Technical Report Number
            w       R       Record control number
            x       NR      International Standard Serial Number
            y       NR      CODEN designation
            z       R       International Standard Book Number
            4       R       Relationship
            6       NR      Linkage
            7       NR      Control subfield
            8       R       Field link and sequence number

            776     R       ADDITIONAL PHYSICAL FORM ENTRY
            ind1    01      Note controller
            ind2    b8      Display constant controller
            a       NR      Main entry heading
            b       NR      Edition
            c       NR      Qualifying information
            d       NR      Place, publisher, and date of publication
            g       R       Related parts
            h       NR      Physical description
            i       R       Relationship information
            k       R       Series data for related item
            m       NR      Material-specific details
            n       R       Note
            o       R       Other item identifier
            r       R       Report number
            s       NR      Uniform title
            t       NR      Title
            u       NR      Standard Technical Report Number
            w       R       Record control number
            x       NR      International Standard Serial Number
            y       NR      CODEN designation
            z       R       International Standard Book Number
            4       R       Relationship
            6       NR      Linkage
            7       NR      Control subfield
            8       R       Field link and sequence number

            777     R       ISSUED WITH ENTRY
            ind1    01      Note controller
            ind2    b8      Display constant controller
            a       NR      Main entry heading
            b       NR      Edition
            c       NR      Qualifying information
            d       NR      Place, publisher, and date of publication
            g       R       Related parts
            h       NR      Physical description
            i       R       Relationship information
            k       R       Series data for related item
            m       NR      Material-specific details
            n       R       Note
            o       R       Other item identifier
            r       R       Report number
            s       NR      Uniform title
            t       NR      Title
            u       NR      Standard Technical Report Number
            w       R       Record control number
            x       NR      International Standard Serial Number
            y       NR      CODEN designation
            z       R       International Standard Book Number
            4       R       Relationship
            6       NR      Linkage
            7       NR      Control subfield
            8       R       Field link and sequence number

            780     R       PRECEDING ENTRY
            ind1    01      Note controller
            ind2    01234567    Type of relationship
            a       NR      Main entry heading
            b       NR      Edition
            c       NR      Qualifying information
            d       NR      Place, publisher, and date of publication
            g       R       Related parts
            h       NR      Physical description
            i       R       Relationship information
            k       R       Series data for related item
            m       NR      Material-specific details
            n       R       Note
            o       R       Other item identifier
            r       R       Report number
            s       NR      Uniform title
            t       NR      Title
            u       NR      Standard Technical Report Number
            w       R       Record control number
            x       NR      International Standard Serial Number
            y       NR      CODEN designation
            z       R       International Standard Book Number
            4       R       Relationship
            6       NR      Linkage
            7       NR      Control subfield
            8       R       Field link and sequence number

            785     R       SUCCEEDING ENTRY
            ind1    01      Note controller
            ind2    012345678    Type of relationship
            a       NR      Main entry heading
            b       NR      Edition
            c       NR      Qualifying information
            d       NR      Place, publisher, and date of publication
            g       R       Related parts
            h       NR      Physical description
            i       R       Relationship information
            k       R       Series data for related item
            m       NR      Material-specific details
            n       R       Note
            o       R       Other item identifier
            r       R       Report number
            s       NR      Uniform title
            t       NR      Title
            u       NR      Standa rd Technical Report Number
            w       R       Record control number
            x       NR      International Standard Serial Number
            y       NR      CODEN designation
            z       R       International Standard Book Number
            4       R       Relationship
            6       NR      Linkage
            7       NR      Control subfield
            8       R       Field link and sequence number

            786     R       DATA SOURCE ENTRY
            ind1    01      Note controller
            ind2    b8      Display constant controller
            a       NR      Main entry heading
            b       NR      Edition
            c       NR      Qualifying information
            d       NR      Place, publisher, and date of publication
            g       R       Related parts
            h       NR      Physical description
            i       R       Relationship information
            j       NR      Period of content
            k       R       Series data for related item
            m       NR      Material-specific details
            n       R       Note
            o       R       Other item identifier
            p       NR      Abbreviated title
            r       R       Report number
            s       NR      Uniform title
            t       NR      Title
            u       NR      Standard Technical Report Number
            v       NR      Source Contribution
            w       R       Record control number
            x       NR      International Standard Serial Number
            y       NR      CODEN designation
            z       R       International Standard Book Number
            4       R       Relationship
            6       NR      Linkage
            7       NR      Control subfield
            8       R       Field link and sequence number

            787     R       OTHER RELATIONSHIP ENTRY
            ind1    01      Note controller
            ind2    b8      Display constant controller
            a       NR      Main entry heading
            b       NR      Edition
            c       NR      Qualifying information
            d       NR      Place, publisher, and date of publication
            g       R       Related parts
            h       NR      Physical description
            i       R       Relationship information
            k       R       Series data for related item
            m       NR      Material-specific details
            n       R       Note
            o       R       Other item identifier
            r       R       Report number
            s       NR      Uniform title
            t       NR      Title
            u       NR      Standard Technical Report Number
            w       R       Record control number
            x       NR      International Standard Serial Number
            y       NR      CODEN designation
            z       R       International Standard Book Number
            4       R       Relationship
            6       NR      Linkage
            7       NR      Control subfield
            8       R       Field link and sequence number

            800     R       SERIES ADDED ENTRY--PERSONAL NAME
            ind1    013     Type of personal name entry element
            ind2    blank   Undefined
            a       NR      Personal name
            b       NR      Numeration
            c       R       Titles and other words associated with a name
            d       NR      Dates associated with a name
            e       R       Relator term
            f       NR      Date of a work
            g       R       Miscellaneous information
            h       NR      Medium
            j       R       Attribution qualifier
            k       R       Form subheading
            l       NR      Language of a work
            m       R       Medium of performance for music
            n       R       Number of part/section of a work
            o       NR      Arranged statement for music
            p       R       Name of part/section of a work
            q       NR      Fuller form of name
            r       NR      Key for music
            s       R       Version
            t       NR      Title of a work
            u       NR      Affiliation
            v       NR      Volume/sequential designation
            w       R       Bibliographic record control number
            x       NR      International Standard Serial Number
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of heading or term
            3       NR      Materials specified
            4       R       Relationship
            5       R       Institution to which field applies
            6       NR      Linkage
            7       NR      Control subfield
            8       R       Field link and sequence number

            810     R       SERIES ADDED ENTRY--CORPORATE NAME
            ind1    012     Type of corporate name entry element
            ind2    blank   Undefined
            a       NR      Corporate name or jurisdiction name as entry element
            b       R       Subordinate unit
            c       R       Location of meeting
            d       R       Date of meeting or treaty signing
            e       R       Relator term
            f       NR      Date of a work
            g       R       Miscellaneous information
            h       NR      Medium
            k       R       Form subheading
            l       NR      Language of a work
            m       R       Medium of performance for music
            n       R       Number of part/section/meeting
            o       NR      Arranged statement for music
            p       R       Name of part/section of a work
            r       NR      Key for music
            s       R       Version
            t       NR      Title of a work
            u       NR      Affiliation
            v       NR      Volume/sequential designation
            w       R       Bibliographic record control number
            x       NR      International Standard Serial Number
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of heading or term
            3       NR      Materials specified
            4       R       Relationship
            5       R       Institution to which field applies
            6       NR      Linkage
            7       NR      Control subfield
            8       R       Field link and sequence number

            811     R       SERIES ADDED ENTRY--MEETING NAME
            ind1    012     Type of meeting name entry element
            ind2    blank   Undefined
            a       NR      Meeting name or jurisdiction name as entry element
            c       R       Location of meeting
            d       R       Date of meeting or treaty signing
            e       R       Subordinate unit
            f       NR      Date of a work
            g       R       Miscellaneous information
            h       NR      Medium
            j       R       Relator term
            k       R       Form subheading
            l       NR      Language of a work
            n       R       Number of part/section/meeting
            p       R       Name of part/section of a work
            q       NR      Name of meeting following jurisdiction name entry element
            s       R       Version
            t       NR      Title of a work
            u       NR      Affiliation
            v       NR      Volume/sequential designation
            w       R       Bibliographic record control number
            x       NR      International Standard Serial Number
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of heading or term
            3       NR      Materials specified
            4       R       Relationship
            5       R       Institution to which field applies
            6       NR      Linkage
            7       NR      Control subfield
            8       R       Field link and sequence number

            830     R       SERIES ADDED ENTRY--UNIFORM TITLE
            ind1    blank   Undefined
            ind2    0-9     Nonfiling characters
            a       NR      Uniform title
            d       R       Date of treaty signing
            f       NR      Date of a work
            g       R       Miscellaneous information
            h       NR      Medium
            k       R       Form subheading
            l       NR      Language of a work
            m       R       Medium of performance for music
            n       R       Number of part/section of a work
            o       NR      Arranged statement for music
            p       R       Name of part/section of a work
            r       NR      Key for music
            s       R       Version
            t       NR      Title of a work
            v       NR      Volume/sequential designation
            w       R       Bibliographic record control number
            x       NR      International Standard Serial Number
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source of heading or term
            3       NR      Materials specified
            5       R       Institution to which field applies
            6       NR      Linkage
            7       NR      Control subfield
            8       R       Field link and sequence number

            841     NR      HOLDINGS CODED DATA VALUES

            842     NR      TEXTUAL PHYSICAL FORM DESIGNATOR

            843     R       REPRODUCTION NOTE

            844     NR      NAME OF UNIT

            845     R       TERMS GOVERNING USE AND REPRODUCTION NOTE

            850     R       HOLDING INSTITUTION
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       R       Holding institution
            8       R       Field link and sequence number

            852     R       LOCATION
            ind1    b012345678    Shelving scheme
            ind2    b012    Shelving order
            a       NR      Location
            b       R       Sublocation or collection
            c       R       Shelving location
            d       R       Former shelving location
            e       R       Address
            f       R       Coded location qualifier
            g       R       Non-coded location qualifier
            h       NR      Classification part
            i       R       Item part
            j       NR      Shelving control number
            k       R       Call number prefix
            l       NR      Shelving form of title
            m       R       Call number suffix
            n       NR      Country code
            p       NR      Piece designation
            q       NR      Piece physical condition
            s       R       Copyright article-fee code
            t       NR      Copy number
            u       R       Uniform Resource Identifier
            x       R       Nonpublic note
            z       R       Public note
            2       NR      Source of classification or shelving scheme
            3       NR      Materials specified
            6       NR      Linkage
            8       NR      Sequence number

            853     R       CAPTIONS AND PATTERN--BASIC BIBLIOGRAPHIC UNIT

            854     R       CAPTIONS AND PATTERN--SUPPLEMENTARY MATERIAL

            855     R       CAPTIONS AND PATTERN--INDEXES

            856     R       ELECTRONIC LOCATION AND ACCESS
            ind1    b012347    Access method
            ind2    b0128   Relationship
            a       R       Host name
            b       R       Access number
            c       R       Compression information
            d       R       Path
            f       R       Electronic name
            h       NR      Processor of request
            i       R       Instruction
            j       NR      Bits per second
            k       NR      Password
            l       NR      Logon
            m       R       Contact for access assistance
            n       NR      Name of location of host
            o       NR      Operating system
            p       NR      Port
            q       NR      Electronic format type
            r       NR      Settings
            s       R       File size
            t       R       Terminal emulation
            u       R       Uniform Resource Identifier
            v       R       Hours access method available
            w       R       Record control number
            x       R       Nonpublic note
            y       R       Link text
            z       R       Public note
            2       NR      Access method
            3       NR      Materials specified
            6       NR      Linkage
            7       NR      Access status
            8       R       Field link and sequence number

            863     R       ENUMERATION AND CHRONOLOGY--BASIC BIBLIOGRAPHIC UNIT

            864     R       ENUMERATION AND CHRONOLOGY--SUPPLEMENTARY MATERIAL

            865     R       ENUMERATION AND CHRONOLOGY--INDEXES

            866     R       TEXTUAL HOLDINGS--BASIC BIBLIOGRAPHIC UNIT

            867     R       TEXTUAL HOLDINGS--SUPPLEMENTARY MATERIAL

            868     R       TEXTUAL HOLDINGS--INDEXES

            876     R       ITEM INFORMATION--BASIC BIBLIOGRAPHIC UNIT

            877     R       ITEM INFORMATION--SUPPLEMENTARY MATERIAL

            878     R       ITEM INFORMATION--INDEXES

            880     R       ALTERNATE GRAPHIC REPRESENTATION
            ind1            Same as associated field
            ind2            Same as associated field
            6       NR      Linkage

            882     NR      REPLACEMENT RECORD INFORMATION
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       R       Replacement title
            i       R       Explanatory text
            w       R       Replacement bibliographic record control number
            6       NR      Linkage
            8       R       Field link and sequence number

            883     R       MACHINE-GENERATED METADATA PROVENANCE
            ind1    b012    Method of assignment
            ind2    blank   Undefined
            a       NR      Creation process
            c       NR      Confidence value
            d       NR      Creation date
            q       NR      Assigning or generating agency
            x       NR      Validity end date
            u       NR      Uniform Resource Identifier
            w       R       Bibliographic record control number
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            8       R       Field link and sequence number

            884     R       DESCRIPTION CONVERSION INFORMATION
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Conversion process
            g       NR      Conversion date
            k       NR      Identifier of source metadata
            q       NR      Conversion agency
            u       R       Uniform Resource Identifier

            885     R       MATCHING INFORMATION
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Matching information
            b       NR      Status of matching and its checking
            c       NR      Confidence value
            d       NR      Generation date
            w       R       Record control number
            x       R       Nonpublic note
            z       R       Public note
            0       R       Authority record control number or standard number
            1       R       Real World Object URI
            2       NR      Source
            5       NR       Institution to which field applies

            886     R       FOREIGN MARC INFORMATION FIELD
            ind1    012     Type of field
            ind2    blank   Undefined
            a       NR      Tag of the foreign MARC field
            b       NR      Content of the foreign MARC field
            c       R       Foreign MARC subfield
            d       R       Foreign MARC subfield
            e       R       Foreign MARC subfield
            f       R       Foreign MARC subfield
            g       R       Foreign MARC subfield
            h       R       Foreign MARC subfield
            i       R       Foreign MARC subfield
            j       R       Foreign MARC subfield
            k       R       Foreign MARC subfield
            l       R       Foreign MARC subfield
            m       R       Foreign MARC subfield
            n       R       Foreign MARC subfield
            o       R       Foreign MARC subfield
            p       R       Foreign MARC subfield
            q       R       Foreign MARC subfield
            r       R       Foreign MARC subfield
            s       R       Foreign MARC subfield
            t       R       Foreign MARC subfield
            u       R       Foreign MARC subfield
            v       R       Foreign MARC subfield
            w       R       Foreign MARC subfield
            x       R       Foreign MARC subfield
            y       R       Foreign MARC subfield
            z       R       Foreign MARC subfield
            0       R       Foreign MARC subfield
            1       R       Foreign MARC subfield
            2       NR      Source of data
            4       R      Foreign MARC subfield
            5       R       Foreign MARC subfield
            6       R       Foreign MARC subfield
            7       R       Foreign MARC subfield
            8       R       Foreign MARC subfield
            9       R       Foreign MARC subfield

            887     R       NON-MARC INFORMATION FIELD
            ind1    blank   Undefined
            ind2    blank   Undefined
            a       NR      Content of non-MARC field
            2       NR      Source of data
            RULES;
    }
}