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    Farthest Frontier

    Module:Citation/CS1/Configuration/sandbox

    Documentation for this module may be created at Module:Citation/CS1/Configuration/sandbox/doc

    --[[
    History of changes since last sync: 2022-07-01
    
    2022-07-09: i18n change for uncategorized namespaces; see Help_talk:Citation_Style_1#i18n_uncategorized_namespace_list
    2022-07-10: add script tag pa;
    2022-08-03: add 'allmusic' to 'generic_names' list; see Help_talk:Citation_Style_1/Archive_85#allmusic
    2022-09-25: create list of single-letter second-level TLDs from main module; add 'foundation'; see Help_talk:Citation_Style_1#CS1_flagging_seemingly_fine_url_as_valid
    2022-10-09: update emoji list; see Help_talk:Citation_Style_1#Reconsider_throwing_an_error_on_ZWJ_sequences?
    2022-10-23: add 'Reuters', 'Business', 'CNN', 'Inc' and 'Inc.' to 'generic_names' list; see Help_talk:Citation_Style_1#Reuters_and_Business_as_generic_last_names
    
    ]]
    
    local lang_obj = mw.language.getContentLanguage();								-- make a language object for the local language; used here for languages and dates 
    
    --[[--------------------------< U N C A T E G O R I Z E D _ N A M E S P A C E S >------------------------------
    
    List of namespaces identifiers for namespaces that will not be included in citation error categories.
    Same as setting notracking = true by default.
    
    For wikis that have a current version of Module:cs1 documentation support, this #invoke will return an unordered
    list of namespace names and their associated identifiers:
    	{{#invoke:cs1 documentation support|uncategorized_namespace_lister|all=<anything>}}
    
    ]]
    
    uncategorized_namespaces_t = {[2]=true};										-- init with user namespace id
    for k, _ in pairs (mw.site.talkNamespaces) do									-- add all talk namespace ids
    	uncategorized_namespaces_t[k] = true;
    end
    
    local uncategorized_subpages = {'/[Ss]andbox', '/[Tt]estcases', '/[^/]*[Ll]og', '/[Aa]rchive'};		-- list of Lua patterns found in page names of pages we should not categorize
    
    
    --[[--------------------------< M E S S A G E S >--------------------------------------------------------------
    
    Translation table
    
    The following contains fixed text that may be output as part of a citation.
    This is separated from the main body to aid in future translations of this
    module.
    
    ]]
    
    local messages = {
    	['agency'] = '$1 $2',														-- $1 is sepc, $2 is agency
    	['archived-dead'] = 'Archived from $1 on $2',
    	['archived-live'] = '$1 from the original on $2',
    	['archived-missing'] = 'Archived from the original$1 on $2',
    	['archived-unfit'] = 'Archived from the original on ',
    	['archived'] = 'Archived',
    	['by'] = 'By',																-- contributions to authored works: introduction, foreword, afterword
    	['cartography'] = 'Cartography by $1',
    	['editor'] = 'ed.',
    	['editors'] = 'eds.',
    	['edition'] = '($1&nbsp;ed.)',
    	['episode'] = 'Episode $1',
    	['et al'] = 'et&nbsp;al.',
    	['in'] = 'In',																-- edited works
    	['inactive'] = 'inactive',
    	['inset'] = '$1 inset',
    	['interview'] = 'Interviewed by $1',										
    	['lay summary'] = 'Lay summary',
    	['mismatch'] = '<code class="cs1-code">&#124;$1=</code> / <code class="cs1-code">&#124;$2=</code> mismatch',	-- $1 is year param name; $2 is date param name
    	['newsgroup'] = '[[Usenet newsgroup|Newsgroup]]:&nbsp;$1',
    	['notitle'] = 'No title',													-- for |title=(()) and (in the future) |title=none
    	['original'] = 'the original',
    	['origdate'] = ' [$1]',
    	['published'] = ' (published $1)',
    	['retrieved'] = 'Retrieved $1',
    	['season'] = 'Season $1',
    	['section'] = '§&nbsp;$1',
    	['sections'] = '§§&nbsp;$1',
    	['series'] = '$1 $2',														-- $1 is sepc, $2 is series
    	['seriesnum'] = 'Series $1',
    	['translated'] = 'Translated by $1',
    	['type'] = ' ($1)',															-- for titletype
    	['written'] = 'Written at $1',
    
    	['vol'] = '$1 Vol.&nbsp;$2',												-- $1 is sepc; bold journal style volume is in presentation{}
    	['vol-no'] = '$1 Vol.&nbsp;$2, no.&nbsp;$3',								-- sepc, volume, issue (alternatively insert $1 after $2, but then we'd also have to change capitalization)
    	['issue'] = '$1 No.&nbsp;$2',												-- $1 is sepc
    
    	['art'] = '$1 Art.&nbsp;$2',												-- $1 is sepc; for {{cite conference}} only
    	['vol-art'] = '$1 Vol.&nbsp;$2, art.&nbsp;$3',								-- sepc, volume, article-number; for {{cite conference}} only
    
    	['j-vol'] = '$1 $2',														-- sepc, volume; bold journal volume is in presentation{}
    	['j-issue'] = ' ($1)',
    	['j-article-num'] = ' $1',													-- TODO: any punctuation here? static text?
    
    	['nopp'] = '$1 $2';															-- page(s) without prefix; $1 is sepc
    
    	['p-prefix'] = "$1 p.&nbsp;$2",												-- $1 is sepc
    	['pp-prefix'] = "$1 pp.&nbsp;$2",											-- $1 is sepc
    	['j-page(s)'] = ': $1',														-- same for page and pages
    
    	['sheet'] = '$1 Sheet&nbsp;$2',												-- $1 is sepc
    	['sheets'] = '$1 Sheets&nbsp;$2',											-- $1 is sepc
    	['j-sheet'] = ': Sheet&nbsp;$1',
    	['j-sheets'] = ': Sheets&nbsp;$1',
    	
    	['language'] = '(in $1)',
    	['via'] = " &ndash; via $1",
    	['event'] = 'Event occurs at',
    	['minutes'] = 'minutes in',
    	
    	-- Determines the location of the help page
    	['help page link'] = 'Help:CS1 errors',
    	['help page label'] = 'help',
    	
    	-- categories
    	['cat wikilink'] = '[[Category:$1]]',										-- $1 is the category name
    	[':cat wikilink'] = '[[:Category:$1|link]]',								-- category name as maintenance message wikilink; $1 is the category name
    
    	-- Internal errors (should only occur if configuration is bad)
    	['undefined_error'] = 'Called with an undefined error condition',
    	['unknown_ID_key'] = 'Unrecognized ID key: ',								-- an ID key in id_handlers not found in ~/Identifiers func_map{}
    	['unknown_ID_access'] = 'Unrecognized ID access keyword: ',					-- an ID access keyword in id_handlers not found in keywords_lists['id-access']{}
    	['unknown_argument_map'] = 'Argument map not defined for this variable',
    	['bare_url_no_origin'] = 'Bare URL found but origin indicator is nil or empty',
    	
    	['warning_msg_e'] = '<span style="color:#d33">One or more <code style="color: inherit; background: inherit; border: none; padding: inherit;">&#123;{$1}}</code> templates have errors</span>; messages may be hidden ([[Help:CS1_errors#Controlling_error_message_display|help]]).';	-- $1 is template link
    	['warning_msg_m'] = '<span style="color:#3a3">One or more <code style="color: inherit; background: inherit; border: none; padding: inherit;">&#123;{$1}}</code> templates have maintenance messages</span>; messages may be hidden ([[Help:CS1_errors#Controlling_error_message_display|help]]).';	-- $1 is template link
    	}
    
    
    --[[--------------------------< C I T A T I O N _ C L A S S _ M A P >------------------------------------------
    
    this table maps the value assigned to |CitationClass= in the cs1|2 templates to the canonical template name when
    the value assigned to |CitationClass= is different from the canonical template name.  |CitationClass= values are
    used as class attributes in the <cite> tag that encloses the citation so these names may not contain spaces while
    the canonical template name may.  These names are used in warning_msg_e and warning_msg_m to create links to the
    template's documentation when an article is displayed in preview mode.
    
    Most cs1|2 template |CitationClass= values at en.wiki match their canonical template names so are not listed here.
    
    ]]
    
    	local citation_class_map_t = {												-- TODO: if kept, these and all other config.CitationClass 'names' require some sort of i18n
    		['audio-visual'] = 'AV media',
    		['AV-media-notes'] = 'AV media notes',
    		['encyclopaedia'] = 'encyclopedia',
    		['mailinglist'] = 'mailing list',
    		['pressrelease'] = 'press release'
    		}
    
    
    --[=[-------------------------< E T _ A L _ P A T T E R N S >--------------------------------------------------
    
    This table provides Lua patterns for the phrase "et al" and variants in name text
    (author, editor, etc.). The main module uses these to identify and emit the 'etal' message.
    
    ]=]
    
    local et_al_patterns = {
    	"[;,]? *[\"']*%f[%a][Ee][Tt]%.? *[Aa][Ll][%.;,\"']*$",						-- variations on the 'et al' theme
    	"[;,]? *[\"']*%f[%a][Ee][Tt]%.? *[Aa][Ll][Ii][AaIi][Ee]?[%.;,\"']*$",		-- variations on the 'et alia', 'et alii' and 'et aliae' themes (false positive 'et aliie' unlikely to match)
    	"[;,]? *%f[%a]and [Oo]thers",												-- an alternative to et al.
    	"%[%[ *[Ee][Tt]%.? *[Aa][Ll]%.? *%]%]",										-- a wikilinked form
    	"%(%( *[Ee][Tt]%.? *[Aa][Ll]%.? *%)%)",										-- a double-bracketed form (to counter partial removal of ((...)) syntax)
    	"[%(%[] *[Ee][Tt]%.? *[Aa][Ll]%.? *[%)%]]",									-- a bracketed form
    	}
    
    
    --[[--------------------------< P R E S E N T A T I O N >------------------------
    
    Fixed presentation markup.  Originally part of citation_config.messages it has
    been moved into its own, more semantically correct place.
    
    ]]
    
    local presentation = 
    	{
    	-- .citation-comment class is specified at Help:CS1_errors#Controlling_error_message_display
    	['hidden-error'] = '<span class="cs1-hidden-error citation-comment">$1</span>',
    	['visible-error'] = '<span class="cs1-visible-error citation-comment">$1</span>',
    	['hidden-maint'] = '<span class="cs1-maint citation-comment">$1</span>',
    	
    	['accessdate'] = '<span class="reference-accessdate">$1$2</span>',			-- to allow editors to hide accessdate using personal CSS
    
    	['bdi'] = '<bdi$1>$2</bdi>',												-- bidirectional isolation used with |script-title= and the like
    
    	['cite'] = '<cite class="$1">$2</cite>';									-- for use when citation does not have a namelist and |ref= not set so no id="..." attribute
    	['cite-id'] = '<cite id="$1" class="$2">$3</cite>';							-- for use when when |ref= is set or when citation has a namelist
    
    	['format'] = ' <span class="cs1-format">($1)</span>',						-- for |format=, |chapter-format=, etc.
    	['interwiki'] = ' <span class="cs1-format">[in $1]</span>',					-- for interwiki-language-linked author, editor, etc
    	['interproj'] = ' <span class="cs1-format">[at $1]</span>',					-- for interwiki-project-linked author, editor, etc (:d: and :s: supported; :w: ignored)
    
    	-- various access levels, for |access=, |doi-access=, |arxiv=, ...
    	-- narrow no-break space &#8239; may work better than nowrap CSS. Or not? Browser support?
    
    	['ext-link-access-signal'] = '<span class="$1" title="$2">$3</span>',		-- external link with appropriate lock icon
    		['free'] = {class='cs1-lock-free', title='Freely accessible'},			-- classes defined in Module:Citation/CS1/styles.css
    		['registration'] = {class='cs1-lock-registration', title='Free registration required'},
    		['limited'] = {class='cs1-lock-limited', title='Free access subject to limited trial, subscription normally required'},
    		['subscription'] = {class='cs1-lock-subscription', title='Paid subscription required'},
    
    	['interwiki-icon'] = '<span class="$1" title="$2">$3</span>',
    		['class-wikisource'] = 'cs1-ws-icon',
    
    	['italic-title'] = "''$1''",
    
    	['kern-left'] = '<span class="cs1-kern-left"></span>$1',					-- spacing to use when title contains leading single or double quote mark
    	['kern-right'] = '$1<span class="cs1-kern-right"></span>',					-- spacing to use when title contains trailing single or double quote mark
    
    	['nowrap1'] = '<span class="nowrap">$1</span>',								-- for nowrapping an item: <span ...>yyyy-mm-dd</span>
    	['nowrap2'] = '<span class="nowrap">$1</span> $2',							-- for nowrapping portions of an item: <span ...>dd mmmm</span> yyyy (note white space)
    
    	['ocins'] = '<span title="$1" class="Z3988"></span>',
    	
    	['parameter'] = '<code class="cs1-code">&#124;$1=</code>',
    	
    	['ps_cs1'] = '.';															-- CS1 style postscript (terminal) character
    	['ps_cs2'] = '';															-- CS2 style postscript (terminal) character (empty string)
    
    	['quoted-text'] = '<q>$1</q>',												-- for wrapping |quote= content
    	['quoted-title'] = '"$1"',
    
    	['sep_cs1'] = '.',															-- CS1 element separator
    	['sep_cs2'] = ',',															-- CS2 separator
    	['sep_nl'] = ';',															-- CS1|2 style name-list separator between names is a semicolon
    	['sep_nl_and'] = ' and ',													-- used as last nl sep when |name-list-style=and and list has 2 items
    	['sep_nl_end'] = '; and ',													-- used as last nl sep when |name-list-style=and and list has 3+ names
    	['sep_name'] = ', ',														-- CS1|2 style last/first separator is <comma><space>
    	['sep_nl_vanc'] = ',',														-- Vancouver style name-list separator between authors is a comma
    	['sep_name_vanc'] = ' ',													-- Vancouver style last/first separator is a space
    
    	['sep_list'] = ', ',														-- used for |language= when list has 3+ items except for last sep which uses sep_list_end
    	['sep_list_pair'] = ' and ',												-- used for |language= when list has 2 items
    	['sep_list_end'] = ', and ',												-- used as last list sep for |language= when list has 3+ items
    	
    	['trans-italic-title'] = "&#91;''$1''&#93;",
    	['trans-quoted-title'] = "&#91;$1&#93;",									-- for |trans-title= and |trans-quote=
    	['vol-bold'] = '$1 <b>$2</b>',												-- sepc, volume; for bold journal cites; for other cites ['vol'] in messages{}
    	}
    
    	
    --[[--------------------------< A L I A S E S >---------------------------------
    
    Aliases table for commonly passed parameters.
    
    Parameter names on the right side in the assignments in this table must have been
    defined in the Whitelist before they will be recognized as valid parameter names
    
    ]]
    
    local aliases = {
    	['AccessDate'] = {'access-date', 'accessdate'},								-- Used by InternetArchiveBot
    	['Agency'] = 'agency',
    	['ArchiveDate'] = {'archive-date', 'archivedate'},							-- Used by InternetArchiveBot
    	['ArchiveFormat'] = 'archive-format',
    	['ArchiveURL'] = {'archive-url', 'archiveurl'},								-- Used by InternetArchiveBot
    	['ArticleNumber'] = 'article-number',
    	['ASINTLD'] = 'asin-tld',
    	['At'] = 'at',																-- Used by InternetArchiveBot
    	['Authors'] = {'authors', 'people', 'credits'},
    	['BookTitle'] = {'book-title', 'booktitle'},
    	['Cartography'] = 'cartography',
    	['Chapter'] = {'chapter', 'contribution', 'entry', 'article', 'section'},
    	['ChapterFormat'] = {'chapter-format', 'contribution-format', 'entry-format',
    		'article-format', 'section-format'};
    	['ChapterURL'] = {'chapter-url', 'contribution-url', 'entry-url', 'article-url', 'section-url', 'chapterurl'},	-- Used by InternetArchiveBot
    	['ChapterUrlAccess'] = {'chapter-url-access', 'contribution-url-access',
    		'entry-url-access', 'article-url-access', 'section-url-access'},		-- Used by InternetArchiveBot
    	['Class'] = 'class',														-- cite arxiv and arxiv identifier
    	['Collaboration'] = 'collaboration',
    	['Conference'] = {'conference', 'event'},
    	['ConferenceFormat'] = 'conference-format',
    	['ConferenceURL'] = 'conference-url',										-- Used by InternetArchiveBot
    	['Date'] = {'date', 'air-date', 'airdate'},									-- air-date and airdate for cite episode and cite serial only
    	['Degree'] = 'degree',
    	['DF'] = 'df',
    	['DisplayAuthors'] = {'display-authors', 'display-subjects'},
    	['DisplayContributors'] = 'display-contributors',
    	['DisplayEditors'] = 'display-editors',
    	['DisplayInterviewers'] = 'display-interviewers',
    	['DisplayTranslators'] = 'display-translators',
    	['Docket'] = 'docket',
    	['DoiBroken'] = 'doi-broken-date',
    	['Edition'] = 'edition',
    	['Embargo'] = 'pmc-embargo-date',
    	['Encyclopedia'] = {'encyclopedia', 'encyclopaedia', 'dictionary'},			-- cite encyclopedia only
    	['Episode'] = 'episode',													-- cite serial only TODO: make available to cite episode?
    	['Format'] = 'format',
    	['ID'] = {'id', 'ID'},
    	['Inset'] = 'inset',
    	['Issue'] = {'issue', 'number'},
    	['Language'] = {'language', 'lang'},
    	['LayDate'] = 'lay-date',
    	['LayFormat'] = 'lay-format',
    	['LaySource'] = 'lay-source',
    	['LayURL'] = 'lay-url',
    	['MailingList'] = {'mailing-list', 'mailinglist'},							-- cite mailing list only
    	['Map'] = 'map',															-- cite map only
    	['MapFormat'] = 'map-format',												-- cite map only
    	['MapURL'] = {'map-url', 'mapurl'},											-- cite map only -- Used by InternetArchiveBot
    	['MapUrlAccess'] = 'map-url-access',										-- cite map only -- Used by InternetArchiveBot
    	['Minutes'] = 'minutes',
    	['Mode'] = 'mode',
    	['NameListStyle'] = 'name-list-style',
    	['Network'] = 'network',
    	['Newsgroup'] = 'newsgroup',												-- cite newsgroup only
    	['NoPP'] = {'no-pp', 'nopp'},
    	['NoTracking'] = {'no-tracking', 'template-doc-demo'},
    	['Number'] = 'number',														-- this case only for cite techreport
    	['OrigDate'] = {'orig-date', 'orig-year', 'origyear'},
    	['Others'] = 'others',
    	['Page'] = {'page', 'p'},													-- Used by InternetArchiveBot
    	['Pages'] = {'pages', 'pp'},												-- Used by InternetArchiveBot
    	['Periodical'] = {'journal', 'magazine', 'newspaper', 'periodical', 'website', 'work'},
    	['Place'] = {'place', 'location'},
    	['PostScript'] = 'postscript',
    	['PublicationDate'] = {'publication-date', 'publicationdate'},
    	['PublicationPlace'] = {'publication-place', 'publicationplace'},
    	['PublisherName'] = {'publisher', 'institution'},
    	['Quote'] = {'quote', 'quotation'},
    	['QuotePage'] = 'quote-page',
    	['QuotePages'] = 'quote-pages',
    	['Ref'] = 'ref',
    	['Scale'] = 'scale',
    	['ScriptChapter'] = {'script-chapter', 'script-contribution', 'script-entry',
    		'script-article', 'script-section'},
    	['ScriptMap'] = 'script-map',
    	['ScriptPeriodical'] = {'script-journal', 'script-magazine', 'script-newspaper',
    		'script-periodical', 'script-website', 'script-work'},
    	['ScriptQuote'] = 'script-quote',
    	['ScriptTitle'] = 'script-title',											-- Used by InternetArchiveBot
    	['Season'] = 'season',
    	['Sections'] = 'sections',													-- cite map only
    	['Series'] = {'series', 'version'},
    	['SeriesLink'] = {'series-link', 'serieslink'},
    	['SeriesNumber'] = {'series-number', 'series-no'},
    	['Sheet'] = 'sheet',														-- cite map only
    	['Sheets'] = 'sheets',														-- cite map only
    	['Station'] = 'station',
    	['Time'] = 'time',
    	['TimeCaption'] = 'time-caption',
    	['Title'] = 'title',														-- Used by InternetArchiveBot
    	['TitleLink'] = {'title-link', 'episode-link', 'episodelink'},				-- Used by InternetArchiveBot
    	['TitleNote'] = 'department',
    	['TitleType'] = {'type', 'medium'},
    	['TransChapter'] = {'trans-article', 'trans-chapter', 'trans-contribution',
    		'trans-entry', 'trans-section'},
    	['Transcript'] = 'transcript',
    	['TranscriptFormat'] = 'transcript-format',	
    	['TranscriptURL'] = {'transcript-url', 'transcripturl'},					-- Used by InternetArchiveBot
    	['TransMap'] = 'trans-map',													-- cite map only
    	['TransPeriodical'] = {'trans-journal', 'trans-magazine', 'trans-newspaper',
    		'trans-periodical', 'trans-website', 'trans-work'},
    	['TransQuote'] = 'trans-quote',
    	['TransTitle'] = 'trans-title',												-- Used by InternetArchiveBot
    	['URL'] = {'url', 'URL'},													-- Used by InternetArchiveBot
    	['UrlAccess'] = 'url-access',												-- Used by InternetArchiveBot
    	['UrlStatus'] = 'url-status',												-- Used by InternetArchiveBot
    	['Vauthors'] = 'vauthors',
    	['Veditors'] = 'veditors',
    	['Via'] = 'via',
    	['Volume'] = 'volume',
    	['Year'] = 'year',
    
    	['AuthorList-First'] = {"first#", "author-first#", "author#-first", "given#",
    		"author-given#", "author#-given"},
    	['AuthorList-Last'] = {"last#", "author-last#", "author#-last", "surname#",
    		"author-surname#", "author#-surname", "author#", "subject#", 'host#'},
    	['AuthorList-Link'] = {"author-link#", "author#-link", "subject-link#",
    		"subject#-link", "authorlink#", "author#link"},
    	['AuthorList-Mask'] = {"author-mask#", "author#-mask", "subject-mask#", "subject#-mask"},
    
    	['ContributorList-First'] = {'contributor-first#', 'contributor#-first',
    		'contributor-given#', 'contributor#-given'},
    	['ContributorList-Last'] = {'contributor-last#', 'contributor#-last',
    		'contributor-surname#', 'contributor#-surname', 'contributor#'},
    	['ContributorList-Link'] = {'contributor-link#', 'contributor#-link'},
    	['ContributorList-Mask'] = {'contributor-mask#', 'contributor#-mask'},
    
    	['EditorList-First'] = {"editor-first#", "editor#-first", "editor-given#", "editor#-given"},
    	['EditorList-Last'] = {"editor-last#", "editor#-last", "editor-surname#",
    		"editor#-surname", "editor#"},
    	['EditorList-Link'] = {"editor-link#", "editor#-link"},
    	['EditorList-Mask'] = {"editor-mask#", "editor#-mask"},
    	
    	['InterviewerList-First'] = {'interviewer-first#', 'interviewer#-first',
    		'interviewer-given#', 'interviewer#-given'},
    	['InterviewerList-Last'] = {'interviewer-last#', 'interviewer#-last',
    		'interviewer-surname#', 'interviewer#-surname', 'interviewer#'},
    	['InterviewerList-Link'] = {'interviewer-link#', 'interviewer#-link'},
    	['InterviewerList-Mask'] = {'interviewer-mask#', 'interviewer#-mask'},
    
    	['TranslatorList-First'] = {'translator-first#', 'translator#-first',
    		'translator-given#', 'translator#-given'},
    	['TranslatorList-Last'] = {'translator-last#', 'translator#-last',
    		'translator-surname#', 'translator#-surname', 'translator#'},
    	['TranslatorList-Link'] = {'translator-link#', 'translator#-link'},
    	['TranslatorList-Mask'] = {'translator-mask#', 'translator#-mask'},
    	}
    
    
    --[[--------------------------< P U N C T _ S K I P >---------------------------
    
    builds a table of parameter names that the extraneous terminal punctuation check should not check.
    
    ]]
    
    local punct_meta_params = {														-- table of aliases[] keys (meta parameters); each key has a table of parameter names for a value
    	'BookTitle', 'Chapter', 'ScriptChapter', 'ScriptTitle', 'Title', 'TransChapter', 'Transcript', 'TransMap',	'TransTitle',	-- title-holding parameters
    	'AuthorList-Mask', 'ContributorList-Mask', 'EditorList-Mask', 'InterviewerList-Mask', 'TranslatorList-Mask',	-- name-list mask may have name separators
    	'PostScript', 'Quote', 'ScriptQuote', 'TransQuote', 'Ref',											-- miscellaneous
    	'ArchiveURL', 'ChapterURL', 'ConferenceURL', 'LayURL', 'MapURL', 'TranscriptURL', 'URL',			-- URL-holding parameters
    	}
    
    local url_meta_params = {														-- table of aliases[] keys (meta parameters); each key has a table of parameter names for a value
    	'ArchiveURL', 'ChapterURL', 'ConferenceURL', 'ID', 'LayURL', 'MapURL', 'TranscriptURL', 'URL',		-- parameters allowed to hold urls
    	'Page', 'Pages', 'At', 'QuotePage', 'QuotePages',							-- insource locators allowed to hold urls
    	}
    
    local function build_skip_table (skip_t, meta_params)
    	for _, meta_param in ipairs (meta_params) do								-- for each meta parameter key
    		local params = aliases[meta_param];										-- get the parameter or the table of parameters associated with the meta parameter name
    		if 'string' == type (params) then
    			skip_t[params] = 1;													-- just a single parameter
    		else
    			for _, param in ipairs (params) do									-- get the parameter name
    				skip_t[param] = 1;												-- add the parameter name to the skip table
    				local count;
    				param, count = param:gsub ('#', '');							-- remove enumerator marker from enumerated parameters
    				if 0 ~= count then												-- if removed
    					skip_t[param] = 1;											-- add param name without enumerator marker
    				end
    			end
    		end
    	end
    	return skip_t;
    end
    
    local punct_skip = {};
    local url_skip = {};
    
    
    --[[--------------------------< S I N G L E - L E T T E R   S E C O N D - L E V E L   D O M A I N S >----------
    
    this is a list of tlds that are known to have single-letter second-level domain names.  This list does not include
    ccTLDs which are accepted in is_domain_name().
    
    ]]
    
    local single_letter_2nd_lvl_domains_t = {'cash', 'company', 'foundation', 'org', 'today'};
    
    
    --[[-----------< S P E C I A L   C A S E   T R A N S L A T I O N S >------------
    
    This table is primarily here to support internationalization.  Translations in
    this table are used, for example, when an error message, category name, etc.,
    is extracted from the English alias key.  There may be other cases where
    this translation table may be useful.
    
    ]]
    local is_Latn = 'A-Za-z\195\128-\195\150\195\152-\195\182\195\184-\198\191\199\132-\201\143';
    local special_case_translation = {
    	['AuthorList'] = 'authors list',											-- used to assemble maintenance category names
    	['ContributorList'] = 'contributors list',									-- translation of these names plus translation of the base maintenance category names in maint_cats{} table below
    	['EditorList'] = 'editors list',											-- must match the names of the actual categories
    	['InterviewerList'] = 'interviewers list',									-- this group or translations used by name_has_ed_markup() and name_has_mult_names()
    	['TranslatorList'] = 'translators list',
    	
    																				-- Lua patterns to match pseudo-titles used by InternetArchiveBot and others as placeholder for unknown |title= value
    	['archived_copy'] = {														-- used with CS1 maint: Archive[d] copy as title
    		['en'] = '^archived?%s+copy$',											-- for English; translators: keep this because templates imported from en.wiki
    		['local'] = nil,														-- translators: replace ['local'] = nil with lowercase translation only when bots or tools create generic titles in your language
    		},
    
    																				-- Lua patterns to match generic titles; usually created by bots or reference filling tools
    																				-- translators: replace ['local'] = nil with lowercase translation only when bots or tools create generic titles in your language
    		-- generic titles and patterns in this table should be lowercase only
    		-- leave ['local'] nil except when there is a matching generic title in your language
    		-- boolean 'true' for plain-text searches; 'false' for pattern searches
    
    	['generic_titles'] = {
    		['accept'] = {
    			},
    		['reject'] = {
    			{['en'] = {'^wayback%s+machine$', false},				['local'] = nil},
    			{['en'] = {'are you a robot', true},					['local'] = nil},
    			{['en'] = {'hugedomains.com', true},					['local'] = nil},
    			{['en'] = {'^[%(%[{<]?no +title[>}%]%)]?$', false},		['local'] = nil},
    			{['en'] = {'page not found', true},						['local'] = nil},
    			{['en'] = {'subscribe to read', true},					['local'] = nil},
    			{['en'] = {'^[%(%[{<]?unknown[>}%]%)]?$', false},		['local'] = nil},
    			{['en'] = {'website is for sale', true},				['local'] = nil},
    			{['en'] = {'^404', false},								['local'] = nil},
    			{['en'] = {'internet archive wayback machine', true},	['local'] = nil},
    			{['en'] = {'log into facebook', true},					['local'] = nil},
    			{['en'] = {'login • instagram', true},					['local'] = nil},
    			{['en'] = {'redirecting...', true},						['local'] = nil},
    			{['en'] = {'usurped title', true},						['local'] = nil},	-- added by a GreenC bot
    			{['en'] = {'webcite query result', true},				['local'] = nil},
    			{['en'] = {'wikiwix\'s cache', true},					['local'] = nil},
    			}
    		},
    
    		-- boolean 'true' for plain-text searches, search string must be lowercase only
    		-- boolean 'false' for pattern searches
    		-- leave ['local'] nil except when there is a matching generic name in your language
    
    	['generic_names'] = {
    		['accept'] = {
    			{['en'] = {'%[%[[^|]*%(author%) *|[^%]]*%]%]', false},				['local'] = nil},
    			},
    		['reject'] = {
    			{['en'] = {'about us', true},										['local'] = nil},
    			{['en'] = {'%f[%a][Aa]dvisor%f[%A]', false},						['local'] = nil},
    			{['en'] = {'allmusic', true},										['local'] = nil},
    			{['en'] = {'%f[%a][Aa]uthor%f[%A]', false},							['local'] = nil},
    			{['en'] = {'business', true},										['local'] = nil},
    			{['en'] = {'cnn', true},											['local'] = nil},
    			{['en'] = {'collaborator', true},									['local'] = nil},
    			{['en'] = {'contributor', true},									['local'] = nil},
    			{['en'] = {'contact us', true},										['local'] = nil},
    			{['en'] = {'directory', true},										['local'] = nil},
    			{['en'] = {'%f[%(%[][%(%[]%s*eds?%.?%s*[%)%]]?$', false},			['local'] = nil},
    			{['en'] = {'[,%.%s]%f[e]eds?%.?$', false},							['local'] = nil},
    			{['en'] = {'^eds?[%.,;]', false},									['local'] = nil},
    			{['en'] = {'^[%(%[]%s*[Ee][Dd][Ss]?%.?%s*[%)%]]', false},			['local'] = nil},
    			{['en'] = {'%f[%a][Ee]dited%f[%A]', false},							['local'] = nil},
    			{['en'] = {'%f[%a][Ee]ditors?%f[%A]', false},						['local'] = nil},
    			{['en'] = {'%f[%a]]Ee]mail%f[%A]', false},							['local'] = nil},
    			{['en'] = {'facebook', true},										['local'] = nil},
    			{['en'] = {'google', true},											['local'] = nil},
    			{['en'] = {'home page', true},										['local'] = nil},
    			{['en'] = {'^[Ii]nc%.?$', false},									['local'] = nil},
    			{['en'] = {'instagram', true},										['local'] = nil},
    			{['en'] = {'interviewer', true},									['local'] = nil},
    			{['en'] = {'linkedIn', true},										['local'] = nil},
    			{['en'] = {'^[Nn]ews$', false},										['local'] = nil},
    			{['en'] = {'pinterest', true},										['local'] = nil},
    			{['en'] = {'policy', true},											['local'] = nil},
    			{['en'] = {'privacy', true},										['local'] = nil},
    			{['en'] = {'reuters', true},										['local'] = nil},
    			{['en'] = {'translator', true},										['local'] = nil},
    			{['en'] = {'tumblr', true},											['local'] = nil},
    			{['en'] = {'twitter', true},										['local'] = nil},
    			{['en'] = {'site name', true},										['local'] = nil},
    			{['en'] = {'statement', true},										['local'] = nil},
    			{['en'] = {'submitted', true},										['local'] = nil},
    			{['en'] = {'super.?user', false},									['local'] = nil},
    			{['en'] = {'%f['..is_Latn..'][Uu]ser%f[^'..is_Latn..']', false},	['local'] = nil},
    			{['en'] = {'verfasser', true},										['local'] = nil},
    			}
    	}
    	}
    
    
    --[[--------------------------< D A T E _ N A M E S >----------------------------------------------------------
    
    This table of tables lists local language date names and fallback English date names.
    The code in Date_validation will look first in the local table for valid date names.
    If date names are not found in the local table, the code will look in the English table.
    
    Because citations can be copied to the local wiki from en.wiki, the English is
    required when the date-name translation function date_name_xlate() is used.
    
    In these tables, season numbering is defined by
    Extended Date/Time Format (EDTF) Specification (https://www.loc.gov/standards/datetime/)
    which became part of ISO 8601 in 2019.  See '§Sub-year groupings'. The standard
    defines various divisions using numbers 21-41. CS1|2 only supports generic seasons.
    EDTF does support the distinction between north and south hemisphere seasons
    but CS1|2 has no way to make that distinction.
    
    33-36 = Quarter 1, Quarter 2, Quarter 3, Quarter 4 (3 months each)
    
    The standard does not address 'named' dates so, for the purposes of CS1|2,
    Easter and Christmas are defined here as 98 and 99, which should be out of the
    ISO 8601 (EDTF) range of uses for a while.
    
    local_date_names_from_mediawiki is a boolean.  When set to:
    	true – module will fetch local month names from MediaWiki for both date_names['local']['long'] and date_names['local']['short']
    	false – module will *not* fetch local month names from MediaWiki
    
    Caveat lector:  There is no guarantee that MediaWiki will provide short month names.  At your wiki you can test
    the results of the MediaWiki fetch in the debug console with this command (the result is alpha sorted):
    	=mw.dumpObject (p.date_names['local'])
    
    While the module can fetch month names from MediaWiki, it cannot fetch the quarter, season, and named date names
    from MediaWiki.  Those must be translated manually.
    
    ]]
    
    local local_date_names_from_mediawiki = true;									-- when false, manual translation required for date_names['local']['long'] and date_names['local']['short']
    																				-- when true, module fetches long and short month names from MediaWiki
    local date_names = {
    	['en'] = {																	-- English
    		['long']	= {['January'] = 1, ['February'] = 2, ['March'] = 3, ['April'] = 4, ['May'] = 5, ['June'] = 6, ['July'] = 7, ['August'] = 8, ['September'] = 9, ['October'] = 10, ['November'] = 11, ['December'] = 12},
    		['short']	= {['Jan'] = 1, ['Feb'] = 2, ['Mar'] = 3, ['Apr'] = 4, ['May'] = 5, ['Jun'] = 6, ['Jul'] = 7, ['Aug'] = 8, ['Sep'] = 9, ['Oct'] = 10, ['Nov'] = 11, ['Dec'] = 12},
    		['quarter'] = {['First Quarter'] = 33, ['Second Quarter'] = 34, ['Third Quarter'] = 35, ['Fourth Quarter'] = 36},
    		['season']	= {['Winter'] = 24, ['Spring'] = 21, ['Summer'] = 22, ['Fall'] = 23, ['Autumn'] = 23},
    		['named']	= {['Easter'] = 98, ['Christmas'] = 99},
    		},
    																				-- when local_date_names_from_mediawiki = false
    	['local'] = {																-- replace these English date names with the local language equivalents
    		['long']	= {['January'] = 1, ['February'] = 2, ['March'] = 3, ['April'] = 4, ['May'] = 5, ['June'] = 6, ['July'] = 7, ['August'] = 8, ['September'] = 9, ['October'] = 10, ['November'] = 11, ['December'] = 12},
    		['short']	= {['Jan'] = 1, ['Feb'] = 2, ['Mar'] = 3, ['Apr'] = 4, ['May'] = 5, ['Jun'] = 6, ['Jul'] = 7, ['Aug'] = 8, ['Sep'] = 9, ['Oct'] = 10, ['Nov'] = 11, ['Dec'] = 12},
    		['quarter'] = {['First Quarter'] = 33, ['Second Quarter'] = 34, ['Third Quarter'] = 35, ['Fourth Quarter'] = 36},
    		['season']	= {['Winter'] = 24, ['Spring'] = 21, ['Summer'] = 22, ['Fall'] = 23, ['Autumn'] = 23},
    		['named']	= {['Easter'] = 98, ['Christmas'] = 99},
    		},
    	['inv_local_long'] = {},													-- used in date reformatting & translation; copy of date_names['local'].long where k/v are inverted: [1]='<local name>' etc.
    	['inv_local_short'] = {},													-- used in date reformatting & translation; copy of date_names['local'].short where k/v are inverted: [1]='<local name>' etc.
    	['inv_local_quarter'] = {},													-- used in date translation; copy of date_names['local'].quarter where k/v are inverted: [1]='<local name>' etc.
    	['inv_local_season'] = {},													-- used in date translation; copy of date_names['local'].season where k/v are inverted: [1]='<local name>' etc.
    	['inv_local_named'] = {},													-- used in date translation; copy of date_names['local'].named where k/v are inverted: [1]='<local name>' etc.
    	['local_digits'] = {['0'] = '0', ['1'] = '1', ['2'] = '2', ['3'] = '3', ['4'] = '4', ['5'] = '5', ['6'] = '6', ['7'] = '7', ['8'] = '8', ['9'] = '9'},	-- used to convert local language digits to Western 0-9
    	['xlate_digits'] = {},
    	}
    
    if local_date_names_from_mediawiki then											-- if fetching local month names from MediaWiki is enabled
    	local long_t = {};
    	local short_t = {};
    	for i=1, 12 do																-- loop 12x and 
    		local name = lang_obj:formatDate('F', '2022-' .. i .. '-1');			-- get long month name for each i
    		long_t[name] = i;														-- save it
    		name = lang_obj:formatDate('M', '2022-' .. i .. '-1');					-- get short month name for each i
    		short_t[name] = i;														-- save it
    	end
    	date_names['local']['long'] = long_t;										-- write the long table – overwrites manual translation
    	date_names['local']['short'] = short_t;										-- write the short table – overwrites manual translation
    end
    																				-- create inverted date-name tables for reformatting and/or translation
    for _, invert_t in pairs {{'long', 'inv_local_long'}, {'short', 'inv_local_short'}, {'quarter', 'inv_local_quarter'}, {'season', 'inv_local_season'}, {'named', 'inv_local_named'}} do
    	for name, i in pairs (date_names['local'][invert_t[1]]) do					-- this table is ['name'] = i
    		date_names[invert_t[2]][i] = name;										-- invert to get [i] = 'name' for conversions from ymd
    	end
    end
    
    for ld, ed in pairs (date_names.local_digits) do								-- make a digit translation table for simple date translation from en to local language using local_digits table
    	date_names.xlate_digits [ed] = ld;											-- en digit becomes index with local digit as the value
    end
    
    local df_template_patterns = {													-- table of redirects to {{Use dmy dates}} and {{Use mdy dates}}
    	'{{ *[Uu]se +(dmy) +dates *[|}]',	-- 1159k								-- sorted by approximate transclusion count
    	'{{ *[Uu]se +(mdy) +dates *[|}]',	-- 212k
    	'{{ *[Uu]se +(MDY) +dates *[|}]',	-- 788
    	'{{ *[Uu]se +(DMY) +dates *[|}]',	-- 343
    	'{{ *([Mm]dy) *[|}]',				-- 176
    	'{{ *[Uu]se *(dmy) *[|}]',			-- 156 + 18
    	'{{ *[Uu]se *(mdy) *[|}]',			-- 149 + 11
    	'{{ *([Dd]my) *[|}]',				-- 56
    	'{{ *[Uu]se +(MDY) *[|}]',			-- 5
    	'{{ *([Dd]MY) *[|}]',				-- 3
    	'{{ *[Uu]se(mdy)dates *[|}]',		-- 1
    	'{{ *[Uu]se +(DMY) *[|}]',			-- 0
    	'{{ *([Mm]DY) *[|}]',				-- 0
    	}
    
    local function get_date_format ()
    	local title_object = mw.title.getCurrentTitle();
    	if title_object.namespace == 10 then										-- not in template space so that unused templates appear in unused-template-reports; 
    		return nil;																-- auto-formatting does not work in Template space so don't set global_df
    	end
    	local content = title_object:getContent() or '';							-- get the content of the article or ''; new pages edited w/ve do not have 'content' until saved; ve does not preview; phab:T221625
    	for _, pattern in ipairs (df_template_patterns) do							-- loop through the patterns looking for {{Use dmy dates}} or {{Use mdy dates}} or any of their redirects
    		local start, _, match = content:find(pattern);							-- match is the three letters indicating desired date format
    		if match then
    			content = content:match ('%b{}', start);							-- get the whole template
    			if content:match ('| *cs1%-dates *= *[lsy][sy]?') then				-- look for |cs1-dates=publication date length access-/archive-date length
    				return match:lower() .. '-' .. content:match ('| *cs1%-dates *= *([lsy][sy]?)');
    			else
    				return match:lower() .. '-all';									-- no |cs1-dates= k/v pair; return value appropriate for use in |df=
    			end
    		end
    	end
    end
    
    local global_df;
    
    
    --[[-----------------< V O L U M E ,  I S S U E ,  P A G E S >------------------
    
    These tables hold cite class values (from the template invocation) and identify those templates that support
    |volume=, |issue=, and |page(s)= parameters.  Cite conference and cite map require further qualification which
    is handled in the main module.
    
    ]]
    
    local templates_using_volume = {'citation', 'audio-visual', 'book', 'conference', 'encyclopaedia', 'interview', 'journal', 'magazine', 'map', 'news', 'report', 'techreport', 'thesis'}
    local templates_using_issue = {'citation', 'conference', 'episode', 'interview', 'journal', 'magazine', 'map', 'news', 'podcast'}
    local templates_not_using_page = {'audio-visual', 'episode', 'mailinglist', 'newsgroup', 'podcast', 'serial', 'sign', 'speech'}
    
    --[[
    
    These tables control when it is appropriate for {{citation}} to render |volume= and/or |issue=.  The parameter
    names in the tables constrain {{citation}} so that its renderings match the renderings of the equivalent cs1
    templates.  For example, {{cite web}} does not support |volume= so the equivalent {{citation |website=...}} must
    not support |volume=.
    
    ]]
    
    local citation_no_volume_t = {													-- {{citation}} does not render |volume= when these parameters are used
    	'website', 'mailinglist', 'script-website',
    	}
    local citation_issue_t = {														-- {{citation}} may render |issue= when these parameters are used
    	'journal', 'magazine', 'newspaper', 'periodical', 'work',
    	'script-journal', 'script-magazine', 'script-newspaper', 'script-periodical', 'script-work',
    	}
    
    --[[
    
    Patterns for finding extra text in |volume=, |issue=, |page=, |pages=
    
    ]]
    
    local vol_iss_pg_patterns = {
    	good_ppattern = '^P[^%.PpGg]',												-- OK to begin with uppercase P: P7 (page 7 of section P), but not p123 (page 123); TODO: this allows 'Pages' which it should not
    	bad_ppatterns = {															-- patterns for |page= and |pages=
    		'^[Pp][PpGg]?%.?[ %d]',
    		'^[Pp][Pp]?%.&nbsp;',													-- from {{p.}} and {{pp.}} templates
    		'^[Pp]ages?',
    		'^[Pp]gs.?',
    		},
    	vpatterns = {																-- patterns for |volume=
    		'^volumes?',
    		'^vols?[%.:=]?'
    		},
    	ipatterns = {																-- patterns for |issue=
    		'^issues?',
    		'^iss[%.:=]?',
    		'^numbers?',
    		'^nos?%A',																-- don't match 'november' or 'nostradamus'
    		'^nr[%.:=]?',
    		'^n[%.:= ]'																-- might be a valid issue without separator (space char is sep char here)
    		}
    	}
    
    --[[--------------------------< K E Y W O R D S >-------------------------------
    
    These tables hold keywords for those parameters that have defined sets of acceptable keywords.
    
    ]]
    
    --[[-------------------< K E Y W O R D S   T A B L E >--------------------------
    
    this is a list of keywords; each key in the list is associated with a table of
    synonymous keywords possibly from different languages.
    
    for I18N: add local-language keywords to value table; do not change the key.
    For example, adding the German keyword 'ja':
    	['affirmative'] = {'yes', 'true', 'y', 'ja'},
    
    Because CS1|2 templates from en.wiki articles are often copied to other local wikis,
    it is recommended that the English keywords remain in these tables.
    
    ]]
    
    local keywords = {
    	['amp'] = {'&', 'amp', 'ampersand'}, 										-- |name-list-style=
    	['and'] = {'and', 'serial'},												-- |name-list-style=
    	['affirmative'] = {'yes', 'true', 'y'},										-- |no-tracking=, |no-pp= -- Used by InternetArchiveBot
    	['afterword'] = {'afterword'},												-- |contribution=
    	['bot: unknown'] = {'bot: unknown'},										-- |url-status= -- Used by InternetArchiveBot
    	['cs1'] = {'cs1'},															-- |mode=
    	['cs2'] = {'cs2'},															-- |mode=
    	['dead'] = {'dead', 'deviated'},											-- |url-status= -- Used by InternetArchiveBot
    	['dmy'] = {'dmy'},															-- |df=
    	['dmy-all'] = {'dmy-all'},													-- |df=
    	['foreword'] = {'foreword'},												-- |contribution=
    	['free'] = {'free'},														-- |<id>-access= -- Used by InternetArchiveBot
    	['harv'] = {'harv'},														-- |ref=; this no longer supported; is_valid_parameter_value() called with <invert> = true
    	['introduction'] = {'introduction'},										-- |contribution=
    	['limited'] = {'limited'},													-- |url-access= -- Used by InternetArchiveBot
    	['live'] = {'live'},														-- |url-status= -- Used by InternetArchiveBot
    	['mdy'] = {'mdy'},															-- |df=
    	['mdy-all'] = {'mdy-all'},													-- |df=
    	['none'] = {'none'},														-- |postscript=, |ref=, |title=, |type= -- Used by InternetArchiveBot
    	['off'] = {'off'},															-- |title= (potentially also: |title-link=, |postscript=, |ref=, |type=)
    	['preface'] = {'preface'},													-- |contribution=
    	['registration'] = {'registration'},										-- |url-access= -- Used by InternetArchiveBot
    	['subscription'] = {'subscription'},										-- |url-access= -- Used by InternetArchiveBot
    	['unfit'] = {'unfit'},														-- |url-status= -- Used by InternetArchiveBot
    	['usurped'] = {'usurped'},													-- |url-status= -- Used by InternetArchiveBot
    	['vanc'] = {'vanc'},														-- |name-list-style=
    	['ymd'] = {'ymd'},															-- |df=
    	['ymd-all'] = {'ymd-all'},													-- |df=
    	--	['yMd'] = {'yMd'},														-- |df=; not supported at en.wiki
    	--	['yMd-all'] = {'yMd-all'},												-- |df=; not supported at en.wiki
    	}
    
    
    --[[------------------------< X L A T E _ K E Y W O R D S >---------------------
    
    this function builds a list, keywords_xlate{}, of the keywords found in keywords{} where the values from keywords{}
    become the keys in keywords_xlate{} and the keys from keywords{} become the values in keywords_xlate{}:
    	['affirmative'] = {'yes', 'true', 'y'},		-- in keywords{}
    becomes
    	['yes'] = 'affirmative',					-- in keywords_xlate{}
    	['true'] = 'affirmative',
    	['y'] = 'affirmative',
    
    the purpose of this function is to act as a translator between a non-English keyword and its English equivalent
    that may be used in other modules of this suite
    
    ]]
    
    local function xlate_keywords ()
    	local out_table = {};														-- output goes here
    	for k, keywords_t in pairs (keywords) do									-- spin through the keywords table
    		for _, keyword in ipairs (keywords_t) do								-- for each keyword
    			out_table[keyword] = k;												-- create an entry in the output table where keyword is the key
    		end
    	end
    	
    	return out_table;
    end
    
    local keywords_xlate = xlate_keywords ();										-- the list of translated keywords
    
    
    --[[----------------< M A K E _ K E Y W O R D S _ L I S T >---------------------
    
    this function assembles, for parameter-value validation, the list of keywords appropriate to that parameter.
    
    keywords_lists{}, is a table of tables from keywords{}
    
    ]]
    
    local function make_keywords_list (keywords_lists)
    	local out_table = {};														-- output goes here
    	
    	for _, keyword_list in ipairs (keywords_lists) do							-- spin through keywords_lists{} and get a table of keywords
    		for _, keyword in ipairs (keyword_list) do								-- spin through keyword_list{} and add each keyword, ...
    			table.insert (out_table, keyword);									-- ... as plain text, to the output list
    		end
    	end
    	return out_table;
    end
    
    
    --[[----------------< K E Y W O R D S _ L I S T S >-----------------------------
    
    this is a list of lists of valid keywords for the various parameters in [key].
    Generally the keys in this table are the canonical en.wiki parameter names though
    some are contrived because of use in multiple differently named parameters:
    ['yes_true_y'], ['id-access'].
    
    The function make_keywords_list() extracts the individual keywords from the
    appropriate list in keywords{}.
    
    The lists in this table are used to validate the keyword assignment for the
    parameters named in this table's keys.
    
    ]]
    
    local keywords_lists = {
    	['yes_true_y'] = make_keywords_list ({keywords.affirmative}),
    	['contribution'] = make_keywords_list ({keywords.afterword, keywords.foreword, keywords.introduction, keywords.preface}),
    	['df'] = make_keywords_list ({keywords.dmy, keywords['dmy-all'], keywords.mdy, keywords['mdy-all'], keywords.ymd, keywords['ymd-all']}),
    	--	['df'] = make_keywords_list ({keywords.dmy, keywords['dmy-all'], keywords.mdy, keywords['mdy-all'], keywords.ymd, keywords['ymd-all'], keywords.yMd, keywords['yMd-all']}),	-- not supported at en.wiki
    	['mode'] = make_keywords_list ({keywords.cs1, keywords.cs2}),
    	['name-list-style'] = make_keywords_list ({keywords.amp, keywords['and'], keywords.vanc}),
    	['ref'] = make_keywords_list ({keywords.harv}),								-- inverted check; |ref=harv no longer supported
    	['url-access'] = make_keywords_list ({keywords.subscription, keywords.limited, keywords.registration}),
    	['url-status'] = make_keywords_list ({keywords.dead, keywords.live, keywords.unfit, keywords.usurped, keywords['bot: unknown']}),
    	['id-access'] = make_keywords_list ({keywords.free}),
    	}
    
    
    --[[---------------------< S T R I P M A R K E R S >----------------------------
    
    Common pattern definition location for stripmarkers so that we don't have to go
    hunting for them if (when) MediaWiki changes their form.
    
    ]]
    
    local stripmarkers = {
    	['any'] = '\127[^\127]*UNIQ%-%-(%a+)%-[%a%d]+%-QINU[^\127]*\127',			-- capture returns name of stripmarker
    	['math'] = '\127[^\127]*UNIQ%-%-math%-[%a%d]+%-QINU[^\127]*\127'			-- math stripmarkers used in coins_cleanup() and coins_replace_math_stripmarker()
    	}
    
    
    --[[------------< I N V I S I B L E _ C H A R A C T E R S >---------------------
    
    This table holds non-printing or invisible characters indexed either by name or
    by Unicode group. Values are decimal representations of UTF-8 codes.  The table
    is organized as a table of tables because the Lua pairs keyword returns table
    data in an arbitrary order.  Here, we want to process the table from top to bottom
    because the entries at the top of the table are also found in the ranges specified
    by the entries at the bottom of the table.
    
    Also here is a pattern that recognizes stripmarkers that begin and end with the
    delete characters.  The nowiki stripmarker is not an error but some others are
    because the parameter values that include them become part of the template's
    metadata before stripmarker replacement.
    
    ]]
    
    local invisible_defs = {
    	del = '\127',																-- used to distinguish between stripmarker and del char
    	zwj = '\226\128\141',														-- used with capture because zwj may be allowed
    	}
    
    local invisible_chars = {
    	{'replacement', '\239\191\189'},											-- U+FFFD, EF BF BD
    	{'zero width joiner', '('.. invisible_defs.zwj .. ')'},						-- U+200D, E2 80 8D; capture because zwj may be allowed
    	{'zero width space', '\226\128\139'},										-- U+200B, E2 80 8B
    	{'hair space', '\226\128\138'},												-- U+200A, E2 80 8A
    	{'soft hyphen', '\194\173'},												-- U+00AD, C2 AD
    	{'horizontal tab', '\009'},													-- U+0009 (HT), 09
    	{'line feed', '\010'},														-- U+000A (LF), 0A
    	{'no-break space', '\194\160'},												-- U+00A0 (NBSP), C2 A0
    	{'carriage return', '\013'},												-- U+000D (CR), 0D
    	{'stripmarker', stripmarkers.any},											-- stripmarker; may or may not be an error; capture returns the stripmaker type
    	{'delete', '('.. invisible_defs.del .. ')'},								-- U+007F (DEL), 7F; must be done after stripmarker test; capture to distinguish isolated del chars not part of stripmarker
    	{'C0 control', '[\000-\008\011\012\014-\031]'},								-- U+0000–U+001F (NULL–US), 00–1F (except HT, LF, CR (09, 0A, 0D))
    	{'C1 control', '[\194\128-\194\159]'},										-- U+0080–U+009F (XXX–APC), C2 80 – C2 9F
    	--	{'Specials', '[\239\191\185-\239\191\191]'},								-- U+FFF9-U+FFFF, EF BF B9 – EF BF BF
    	--	{'Private use area', '[\238\128\128-\239\163\191]'},						-- U+E000–U+F8FF, EE 80 80 – EF A3 BF
    	--	{'Supplementary Private Use Area-A', '[\243\176\128\128-\243\191\191\189]'},	-- U+F0000–U+FFFFD, F3 B0 80 80 – F3 BF BF BD
    	--	{'Supplementary Private Use Area-B', '[\244\128\128\128-\244\143\191\189]'},	-- U+100000–U+10FFFD, F4 80 80 80 – F4 8F BF BD
    	}
    
    --[[
    
    Indic script makes use of zero width joiner as a character modifier so zwj
    characters must be left in.  This pattern covers all of the unicode characters
    for these languages:
    	Devanagari					0900–097F – https://unicode.org/charts/PDF/U0900.pdf
    		Devanagari extended		A8E0–A8FF – https://unicode.org/charts/PDF/UA8E0.pdf
    	Bengali						0980–09FF – https://unicode.org/charts/PDF/U0980.pdf
    	Gurmukhi					0A00–0A7F – https://unicode.org/charts/PDF/U0A00.pdf
    	Gujarati					0A80–0AFF – https://unicode.org/charts/PDF/U0A80.pdf
    	Oriya						0B00–0B7F – https://unicode.org/charts/PDF/U0B00.pdf
    	Tamil						0B80–0BFF – https://unicode.org/charts/PDF/U0B80.pdf
    	Telugu						0C00–0C7F – https://unicode.org/charts/PDF/U0C00.pdf
    	Kannada						0C80–0CFF – https://unicode.org/charts/PDF/U0C80.pdf
    	Malayalam					0D00–0D7F – https://unicode.org/charts/PDF/U0D00.pdf
    plus the not-necessarily Indic scripts for Sinhala and Burmese:
    	Sinhala						0D80-0DFF - https://unicode.org/charts/PDF/U0D80.pdf
    	Myanmar						1000-109F - https://unicode.org/charts/PDF/U1000.pdf
    		Myanmar extended A		AA60-AA7F - https://unicode.org/charts/PDF/UAA60.pdf
    		Myanmar extended B		A9E0-A9FF - https://unicode.org/charts/PDF/UA9E0.pdf
    the pattern is used by has_invisible_chars() and coins_cleanup()
    
    ]]
    
    local indic_script = '[\224\164\128-\224\181\191\224\163\160-\224\183\191\225\128\128-\225\130\159\234\167\160-\234\167\191\234\169\160-\234\169\191]';
    
    -- list of emoji that use a zwj character (U+200D) to combine with another emoji
    -- from: https://unicode.org/Public/emoji/15.0/emoji-zwj-sequences.txt; version: 15.0; 2022-05-06
    -- table created by: [[:en:Module:Make emoji zwj table]]
    local emoji_t = {																-- indexes are decimal forms of the hex values in U+xxxx
    	[9760] = true,																-- U+2620 ☠ skull and crossbones
    	[9792] = true,																-- U+2640 ♀ female sign
    	[9794] = true,																-- U+2642 ♂ male sign
    	[9877] = true,																-- U+2695 ⚕ staff of aesculapius
    	[9878] = true,																-- U+2696 ⚖ scales
    	[9895] = true,																-- U+26A7 ⚧ male with stroke and male and female sign
    	[9992] = true,																-- U+2708 ✈ airplane
    	[10052] = true,																-- U+2744 ❄ snowflake
    	[10084] = true,																-- U+2764 ❤ heavy black heart
    	[11035] = true,																-- U+2B1B ⬛ black large square
    	[127752] = true,															-- U+1F308 🌈 rainbow
    	[127787] = true,															-- U+1F32B 🌫 fog
    	[127806] = true,															-- U+1F33E 🌾 ear of rice
    	[127859] = true,															-- U+1F373 🍳 cooking
    	[127868] = true,															-- U+1F37C 🍼 baby bottle
    	[127876] = true,															-- U+1F384 🎄 christmas tree
    	[127891] = true,															-- U+1F393 🎓 graduation cap
    	[127908] = true,															-- U+1F3A4 🎤 microphone
    	[127912] = true,															-- U+1F3A8 🎨 artist palette
    	[127979] = true,															-- U+1F3EB 🏫 school
    	[127981] = true,															-- U+1F3ED 🏭 factory
    	[128102] = true,															-- U+1F466 👦 boy
    	[128103] = true,															-- U+1F467 👧 girl
    	[128104] = true,															-- U+1F468 👨 man
    	[128105] = true,															-- U+1F469 👩 woman
    	[128139] = true,															-- U+1F48B 💋 kiss mark
    	[128168] = true,															-- U+1F4A8 💨 dash symbol
    	[128171] = true,															-- U+1F4AB 💫 dizzy symbol
    	[128187] = true,															-- U+1F4BB 💻 personal computer
    	[128188] = true,															-- U+1F4BC 💼 brief case
    	[128293] = true,															-- U+1F525 🔥 fire
    	[128295] = true,															-- U+1F527 🔧 wrench
    	[128300] = true,															-- U+1F52C 🔬 microscope
    	[128488] = true,															-- U+1F5E8 🗨 left speech bubble
    	[128640] = true,															-- U+1F680 🚀 rocket
    	[128658] = true,															-- U+1F692 🚒 fire engine
    	[129309] = true,															-- U+1F91D 🤝 handshake
    	[129455] = true,															-- U+1F9AF 🦯 probing cane
    	[129456] = true,															-- U+1F9B0 🦰 emoji component red hair
    	[129457] = true,															-- U+1F9B1 🦱 emoji component curly hair
    	[129458] = true,															-- U+1F9B2 🦲 emoji component bald
    	[129459] = true,															-- U+1F9B3 🦳 emoji component white hair
    	[129466] = true,															-- U+1F9BA 🦺 safety vest
    	[129468] = true,															-- U+1F9BC 🦼 motorized wheelchair
    	[129469] = true,															-- U+1F9BD 🦽 manual wheelchair
    	[129489] = true,															-- U+1F9D1 🧑 adult
    	[129657] = true,															-- U+1FA79 🩹 adhesive bandage
    	[129778] = true,															-- U+1FAF2 🫲 leftwards hand
    	}
    
    
    --[[----------------------< L A N G U A G E   S U P P O R T >-------------------
    
    These tables and constants support various language-specific functionality.
    
    ]]
    
    --local this_wiki_code = mw.getContentLanguage():getCode();						-- get this wiki's language code
    local this_wiki_code = lang_obj:getCode();										-- get this wiki's language code
    if string.match (mw.site.server, 'wikidata') then
    		this_wiki_code = mw.getCurrentFrame():preprocess('{{int:lang}}');		-- on Wikidata so use interface language setting instead
    	end
    
    local mw_languages_by_tag_t = mw.language.fetchLanguageNames (this_wiki_code, 'all');	-- get a table of language tag/name pairs known to Wikimedia; used for interwiki tests
    local mw_languages_by_name_t = {};
    	for k, v in pairs (mw_languages_by_tag_t) do								-- build a 'reversed' table name/tag language pairs know to MediaWiki; used for |language=
    		v = mw.ustring.lower (v);												-- lowercase for tag fetch; get name's proper case from mw_languages_by_tag_t[<tag>]
    		if mw_languages_by_name_t[v] then										-- when name already in the table
    			if 2 == #k or 3 == #k then											-- if tag does not have subtags
    				mw_languages_by_name_t[v] = k;									-- prefer the shortest tag for this name
    			end
    		else																	-- here when name not in the table
    			mw_languages_by_name_t[v] = k;										-- so add name and matching tag
    		end
    	end
    
    local inter_wiki_map = {};														-- map of interwiki prefixes that are language-code prefixes
    	for k, v in pairs (mw.site.interwikiMap ('local')) do						-- spin through the base interwiki map (limited to local)
    		if mw_languages_by_tag_t[v["prefix"]] then								-- if the prefix matches a known language tag
    			inter_wiki_map[v["prefix"]] = true;									-- add it to our local map
    		end
    	end
    
    
    --[[--------------------< S C R I P T _ L A N G _ C O D E S >-------------------
    
    This table is used to hold ISO 639-1 two-character and ISO 639-3 three-character
    language codes that apply only to |script-title= and |script-chapter=
    
    ]]
    
    local script_lang_codes = {
    	'ab', 'am', 'ar', 'be', 'bg', 'bn', 'bo', 'bs', 'dv', 'dz', 'el', 'fa', 'gu', 
    	'he', 'hi', 'hy', 'ja', 'ka', 'kk', 'km', 'kn', 'ko', 'ku', 'ky', 'lo', 'mk',
    	'ml', 'mn', 'mr', 'my', 'ne', 'or', 'ota', 'pa', 'ps', 'ru', 'sd', 'si', 'sr',
    	'syc', 'ta', 'te', 'tg', 'th', 'ti', 'ug', 'uk', 'ur', 'uz', 'yi', 'yue', 'zh'
    	};
    
    
    --[[---------------< L A N G U A G E   R E M A P P I N G >----------------------
    
    These tables hold language information that is different (correct) from MediaWiki's definitions
    
    For each ['code'] = 'language name' in lang_code_remap{} there must be a matching ['language name'] = {'language name', 'code'} in lang_name_remap{}
    
    lang_code_remap{}:
    	key is always lowercase ISO 639-1, -2, -3 language code or a valid lowercase IETF language tag
    	value is properly spelled and capitalized language name associated with key
    	only one language name per key;
    	key/value pair must have matching entry in lang_name_remap{}
    
    lang_name_remap{}:
    	key is always lowercase language name
    	value is a table the holds correctly spelled and capitalized language name [1] and associated code [2] (code must match a code key in lang_code_remap{})
    	may have multiple keys referring to a common preferred name and code; For example:
    		['kolsch'] and ['kölsch'] both refer to 'Kölsch' and 'ksh'
    
    ]]
    
    local lang_code_remap = {														-- used for |language= and |script-title= / |script-chapter=
    	['als'] = 'Tosk Albanian',													-- MediaWiki returns Alemannisch 
    	['bh'] = 'Bihari',															-- MediaWiki uses 'bh' as a subdomain name for Bhojpuri Wikipedia: bh.wikipedia.org
    	['bla'] = 'Blackfoot',														-- MediaWiki/IANA/ISO 639: Siksika; use en.wiki preferred name
    	['bn'] = 'Bengali',															-- MediaWiki returns Bangla
    	['ca-valencia'] = 'Valencian',												-- IETF variant of Catalan
    	['ilo'] = 'Ilocano',														-- MediaWiki/IANA/ISO 639: Iloko; use en.wiki preferred name
    	['ksh'] = 'Kölsch',															-- MediaWiki: Colognian; use IANA/ISO 639 preferred name
    	['ksh-x-colog'] = 'Colognian',												-- override MediaWiki ksh; no IANA/ISO 639 code for Colognian; IETF private code created at Module:Lang/data
    	['mis-x-ripuar'] = 'Ripuarian',												-- override MediaWiki ksh; no IANA/ISO 639 code for Ripuarian; IETF private code created at Module:Lang/data
    	['nan-tw'] = 'Taiwanese Hokkien',											-- make room for MediaWiki/IANA/ISO 639 nan: Min Nan Chinese and support en.wiki preferred name
    	}
    
    local lang_name_remap = {														-- used for |language=; names require proper capitalization; tags must be lowercase
    	['alemannisch'] = {'Swiss German', 'gsw'},									-- not an ISO or IANA language name; MediaWiki uses 'als' as a subdomain name for Alemannic Wikipedia: als.wikipedia.org
    	['bangla'] = {'Bengali', 'bn'},												-- MediaWiki returns Bangla (the endonym) but we want Bengali (the exonym); here we remap
    	['bengali'] = {'Bengali', 'bn'},											-- MediaWiki doesn't use exonym so here we provide correct language name and 639-1 code
    	['bhojpuri'] = {'Bhojpuri', 'bho'},											-- MediaWiki uses 'bh' as a subdomain name for Bhojpuri Wikipedia: bh.wikipedia.org
    	['bihari'] = {'Bihari', 'bh'},												-- MediaWiki replaces 'Bihari' with 'Bhojpuri' so 'Bihari' cannot be found
    	['blackfoot'] = {'Blackfoot', 'bla'},										-- MediaWiki/IANA/ISO 639: Siksika; use en.wiki preferred name
    	['colognian'] = {'Colognian', 'ksh-x-colog'},								-- MediaWiki preferred name for ksh
    	['ilocano'] = {'Ilocano', 'ilo'},											-- MediaWiki/IANA/ISO 639: Iloko; use en.wiki preferred name
    	['kolsch'] = {'Kölsch', 'ksh'},												-- use IANA/ISO 639 preferred name (use non-diacritical o instead of umlaut ö)
    	['kölsch'] = {'Kölsch', 'ksh'},												-- use IANA/ISO 639 preferred name
    	['ripuarian'] = {'Ripuarian', 'mis-x-ripuar'},								-- group of dialects; no code in MediaWiki or in IANA/ISO 639
    	['taiwanese hokkien'] = {'Taiwanese Hokkien', 'nan-tw'},					-- make room for MediaWiki/IANA/ISO 639 nan: Min Nan Chinese 
    	['tosk albanian'] = {'Tosk Albanian', 'als'},								-- MediaWiki replaces 'Tosk Albanian' with 'Alemannisch' so 'Tosk Albanian' cannot be found
    	['valencian'] = {'Valencian', 'ca'},										-- variant of Catalan; categorizes as Catalan
    	}
    
    
    --[[---------------< P R O P E R T I E S _ C A T E G O R I E S >----------------
    
    Properties categories. These are used for investigating qualities of citations.
    
    ]]
    
    local prop_cats = {
    	['foreign-lang-source'] = 'CS1 $1-language sources ($2)',					-- |language= categories; $1 is foreign-language name, $2 is ISO639-1 code
    	['foreign-lang-source-2'] = 'CS1 foreign language sources (ISO 639-2)|$1',	-- |language= category; a cat for ISO639-2 languages; $1 is the ISO 639-2 code used as a sort key
    	['jul-greg-uncertainty'] = 'CS1: Julian–Gregorian uncertainty',				-- probably temporary cat to identify scope of template with dates 1 October 1582 – 1 January 1926
    	['local-lang-source'] = 'CS1 $1-language sources ($2)',						-- |language= categories; $1 is local-language name, $2 is ISO639-1 code; not emitted when local_lang_cat_enable is false
    	['location-test'] = 'CS1 location test',
    	['long-vol'] = 'CS1: long volume value',									-- probably temporary cat to identify scope of |volume= values longer than 4 characters
    	['script'] = 'CS1 uses $1-language script ($2)',							-- |script-title=xx: has matching category; $1 is language name, $2 is ISO639-1 code
    	['tracked-param'] = 'CS1 tracked parameter: $1',							-- $1 is base (enumerators removed) parameter name
    	['year-range-abbreviated'] = 'CS1: abbreviated year range',					-- probably temporary cat to identify scope of |date=, |year= values using YYYY–YY form
    	}
    
    
    --[[-------------------< T I T L E _ T Y P E S >--------------------------------
    
    Here we map a template's CitationClass to TitleType (default values for |type= parameter)
    
    ]]
    
    local title_types = {
    	['AV-media-notes'] = 'Media notes',
    	['interview'] = 'Interview',
    	['mailinglist'] = 'Mailing list',
    	['map'] = 'Map',
    	['podcast'] = 'Podcast',
    	['pressrelease'] = 'Press release',
    	['report'] = 'Report',
    	['speech'] = 'Speech',
    	['techreport'] = 'Technical report',
    	['thesis'] = 'Thesis',
    	}
    
    
    --[[===================<< E R R O R   M E S S A G I N G >>======================
    ]]
    
    --[[----------< E R R O R   M E S S A G E   S U P P L I M E N T S >-------------
    
    I18N for those messages that are supplemented with additional specific text that
    describes the reason for the error
    
    TODO: merge this with special_case_translations{}?
    ]]
    
    local err_msg_supl = {
    	['char'] = 'invalid character',												-- |isbn=, |sbn=
    	['check'] = 'checksum',														-- |isbn=, |sbn=
    	['flag'] = 'flag',															-- |archive-url=
    	['form'] = 'invalid form',													-- |isbn=, |sbn=
    	['group'] = 'invalid group id',												-- |isbn=
    	['initials'] = 'initials',													-- Vancouver
    	['invalid language code'] = 'invalid language code',						-- |script-<param>=
    	['journal'] = 'journal',													-- |bibcode=
    	['length'] = 'length',														-- |isbn=, |bibcode=, |sbn=
    	['liveweb'] = 'liveweb',													-- |archive-url=
    	['missing comma'] = 'missing comma',										-- Vancouver
    	['missing prefix'] = 'missing prefix',										-- |script-<param>=
    	['missing title part'] = 'missing title part',								-- |script-<param>=
    	['name'] = 'name',															-- Vancouver
    	['non-Latin char'] = 'non-Latin character',									-- Vancouver
    	['path'] = 'path',															-- |archive-url=
    	['prefix'] = 'invalid prefix',												-- |isbn=
    	['punctuation'] = 'punctuation',											-- Vancouver
    	['save'] = 'save command',													-- |archive-url=
    	['suffix'] = 'suffix',														-- Vancouver
    	['timestamp'] = 'timestamp',												-- |archive-url=
    	['unknown language code'] = 'unknown language code',						-- |script-<param>=
    	['value'] = 'value',														-- |bibcode=
    	['year'] = 'year',															-- |bibcode=
    	}
    
    
    --[[--------------< E R R O R _ C O N D I T I O N S >---------------------------
    
    Error condition table.  This table has two sections: errors at the top, maintenance
    at the bottom.  Maint 'messaging' does not have a 'message' (message=nil)
    
    The following contains a list of IDs for various error conditions defined in the
    code.  For each ID, we specify a text message to display, an error category to
    include, and whether the error message should be wrapped as a hidden comment.
    
    Anchor changes require identical changes to matching anchor in Help:CS1 errors
    
    TODO: rename error_conditions{} to something more generic; create separate error
    and maint tables inside that?
    
    ]]
    
    local error_conditions = {
    	err_accessdate_missing_url = {
    		message = '<code class="cs1-code">&#124;access-date=</code> requires <code class="cs1-code">&#124;url=</code>',
    		anchor = 'accessdate_missing_url',
    		category = 'CS1 errors: access-date without URL',
    		hidden = false
     		},
    	err_apostrophe_markup = {
    		message = 'Italic or bold markup not allowed in: <code class="cs1-code">&#124;$1=</code>',	-- $1 is parameter name
    		anchor = 'apostrophe_markup',
    		category = 'CS1 errors: markup',
    		hidden = false
     		},
    	err_archive_missing_date = {
    		message = '<code class="cs1-code">&#124;archive-url=</code> requires <code class="cs1-code">&#124;archive-date=</code>',
    		anchor = 'archive_missing_date',
    		category = 'CS1 errors: archive-url',
    		hidden = false
    		},
    	err_archive_missing_url = {
    		message = '<code class="cs1-code">&#124;archive-url=</code> requires <code class="cs1-code">&#124;url=</code>',
    		anchor = 'archive_missing_url',
    		category = 'CS1 errors: archive-url',
    		hidden = false
    		},
    	err_archive_url = {
    		message = '<code class="cs1-code">&#124;archive-url=</code> is malformed: $1',	-- $1 is error message detail
    		anchor = 'archive_url',
    		category = 'CS1 errors: archive-url',
    		hidden = false
    		},
    	err_arxiv_missing = {
    		message = '<code class="cs1-code">&#124;arxiv=</code> required',
    		anchor = 'arxiv_missing',
    		category = 'CS1 errors: arXiv',											-- same as bad arxiv
    		hidden = false
    		},
    	err_asintld_missing_asin = {
    		message = '<code class="cs1-code">&#124;$1=</code> requires <code class="cs1-code">&#124;asin=</code>',	-- $1 is parameter name
    		anchor = 'asintld_missing_asin',
    		category = 'CS1 errors: ASIN TLD',
    		hidden = false
    		},
    	err_bad_arxiv = {
    		message = 'Check <code class="cs1-code">&#124;arxiv=</code> value',
    		anchor = 'bad_arxiv',
    		category = 'CS1 errors: arXiv',
    		hidden = false
    		},
    	err_bad_asin = {
    		message = 'Check <code class="cs1-code">&#124;asin=</code> value',
    		anchor = 'bad_asin',
    		category ='CS1 errors: ASIN',
    		hidden = false
    		},
    	err_bad_asin_tld = {
    		message = 'Check <code class="cs1-code">&#124;asin-tld=</code> value',
    		anchor = 'bad_asin_tld',
    		category ='CS1 errors: ASIN TLD',
    		hidden = false
    		},
    	err_bad_bibcode = {
    		message = 'Check <code class="cs1-code">&#124;bibcode=</code> $1',		-- $1 is error message detail
    		anchor = 'bad_bibcode',
    		category = 'CS1 errors: bibcode',
    		hidden = false
    		},
    	err_bad_biorxiv = {
    		message = 'Check <code class="cs1-code">&#124;biorxiv=</code> value',
    		anchor = 'bad_biorxiv',
    		category = 'CS1 errors: bioRxiv',
    		hidden = false
    		},
    	err_bad_citeseerx = {
    		message = 'Check <code class="cs1-code">&#124;citeseerx=</code> value',
    		anchor = 'bad_citeseerx',
    		category = 'CS1 errors: citeseerx',
    		hidden = false
    		},
    	err_bad_date = {
    		message = 'Check date values in: $1',									-- $1 is a parameter name list
    		anchor = 'bad_date',
    		category = 'CS1 errors: dates',
    		hidden = false
    		},
    	err_bad_doi = {
    		message = 'Check <code class="cs1-code">&#124;doi=</code> value',
    		anchor = 'bad_doi',
    		category = 'CS1 errors: DOI',
    		hidden = false
    		},
    	err_bad_hdl = {
    		message = 'Check <code class="cs1-code">&#124;hdl=</code> value',
    		anchor = 'bad_hdl',
    		category = 'CS1 errors: HDL',
    		hidden = false
    		},
    	err_bad_isbn = {
    		message = 'Check <code class="cs1-code">&#124;isbn=</code> value: $1',	-- $1 is error message detail
    		anchor = 'bad_isbn',
    		category = 'CS1 errors: ISBN',
    		hidden = false
    		},
    	err_bad_ismn = {
    		message = 'Check <code class="cs1-code">&#124;ismn=</code> value',
    		anchor = 'bad_ismn',
    		category = 'CS1 errors: ISMN',
    		hidden = false
    		},
    	err_bad_issn = {
    		message = 'Check <code class="cs1-code">&#124;$1issn=</code> value',	-- $1 is 'e' or '' for eissn or issn
    		anchor = 'bad_issn',
    		category = 'CS1 errors: ISSN',
    		hidden = false
    		},
    	err_bad_jfm = {
    		message = 'Check <code class="cs1-code">&#124;jfm=</code> value',
    		anchor = 'bad_jfm',
    		category = 'CS1 errors: JFM',
    		hidden = false
    		},
    	err_bad_jstor = {
    		message = 'Check <code class="cs1-code">&#124;jstor=</code> value',
    		anchor = 'bad_jstor',
    		category = 'CS1 errors: JSTOR',
    		hidden = false
    		},
    	err_bad_lccn = {
    		message = 'Check <code class="cs1-code">&#124;lccn=</code> value',
    		anchor = 'bad_lccn',
    		category = 'CS1 errors: LCCN',
    		hidden = false
    		},
    	err_bad_mr = {
    		message = 'Check <code class="cs1-code">&#124;mr=</code> value',
    		anchor = 'bad_mr',
    		category = 'CS1 errors: MR',
    		hidden = false
    		},
    	err_bad_oclc = {
    		message = 'Check <code class="cs1-code">&#124;oclc=</code> value',
    		anchor = 'bad_oclc',
    		category = 'CS1 errors: OCLC',
    		hidden = false
    		},
    	err_bad_ol = {
    		message = 'Check <code class="cs1-code">&#124;ol=</code> value',
    		anchor = 'bad_ol',
    		category = 'CS1 errors: OL',
    		hidden = false
    		},
    	err_bad_osti = {
    		message = 'Check <code class="cs1-code">&#124;osti=</code> value',
    		anchor = 'bad_osti',
    		category = 'CS1 errors: OSTI',
    		hidden = false
    		},
    	err_bad_paramlink = {														-- for |title-link=, |author/editor/translator-link=, |series-link=, |episode-link=
    		message = 'Check <code class="cs1-code">&#124;$1=</code> value',		-- $1 is parameter name
    		anchor = 'bad_paramlink',
    		category = 'CS1 errors: parameter link',
    		hidden = false
    		},
    	err_bad_pmc = {
    		message = 'Check <code class="cs1-code">&#124;pmc=</code> value',
    		anchor = 'bad_pmc',
    		category = 'CS1 errors: PMC',
    		hidden = false
    		},
    	err_bad_pmid = {
    		message = 'Check <code class="cs1-code">&#124;pmid=</code> value',
    		anchor = 'bad_pmid',
    		category = 'CS1 errors: PMID',
    		hidden = false
    		},
    	err_bad_rfc = {
    		message = 'Check <code class="cs1-code">&#124;rfc=</code> value',
    		anchor = 'bad_rfc',
    		category = 'CS1 errors: RFC',
    		hidden = false
    		},
    	err_bad_s2cid = {
    		message = 'Check <code class="cs1-code">&#124;s2cid=</code> value',
    		anchor = 'bad_s2cid',
    		category = 'CS1 errors: S2CID',
    		hidden = false
    		},
    	err_bad_sbn = {
    		message = 'Check <code class="cs1-code">&#124;sbn=</code> value: $1',	-- $1 is error message detail
    		anchor = 'bad_sbn',
    		category = 'CS1 errors: SBN',
    		hidden = false
    		},
    	err_bad_ssrn = {
    		message = 'Check <code class="cs1-code">&#124;ssrn=</code> value',
    		anchor = 'bad_ssrn',
    		category = 'CS1 errors: SSRN',
    		hidden = false
    		},
    	err_bad_url = {
    		message = 'Check $1 value',												-- $1 is parameter name
    		anchor = 'bad_url',
    		category = 'CS1 errors: URL',
    		hidden = false
    		},
    	err_bad_usenet_id = {
    		message = 'Check <code class="cs1-code">&#124;message-id=</code> value',
    		anchor = 'bad_message_id',
    		category = 'CS1 errors: message-id',
    		hidden = false
    		},
    	err_bad_zbl = {
    		message = 'Check <code class="cs1-code">&#124;zbl=</code> value',
    		anchor = 'bad_zbl',
    		category = 'CS1 errors: Zbl',
    		hidden = false
    		},
    	err_bare_url_missing_title = {
    		message = '$1 missing title',											-- $1 is parameter name
    		anchor = 'bare_url_missing_title',
    		category = 'CS1 errors: bare URL',
    		hidden = false
    		},
    	err_biorxiv_missing = {
    		message = '<code class="cs1-code">&#124;biorxiv=</code> required',
    		anchor = 'biorxiv_missing',
    		category = 'CS1 errors: bioRxiv',										-- same as bad bioRxiv
    		hidden = false
    		},
    	err_chapter_ignored = {
    		message = '<code class="cs1-code">&#124;$1=</code> ignored',			-- $1 is parameter name
    		anchor = 'chapter_ignored',
    		category = 'CS1 errors: chapter ignored',
    		hidden = false
    		},
    	err_citation_missing_title = {
    		message = 'Missing or empty <code class="cs1-code">&#124;$1=</code>',	-- $1 is parameter name
    		anchor = 'citation_missing_title',
    		category = 'CS1 errors: missing title',
    		hidden = false
    		},
    	err_citeseerx_missing = {
    		message = '<code class="cs1-code">&#124;citeseerx=</code> required',
    		anchor = 'citeseerx_missing',
    		category = 'CS1 errors: citeseerx',										-- same as bad citeseerx
    		hidden = false
    		},
    	err_cite_web_url = {														-- this error applies to cite web and to cite podcast
    		message = 'Missing or empty <code class="cs1-code">&#124;url=</code>',
    		anchor = 'cite_web_url',
    		category = 'CS1 errors: requires URL',
    		hidden = false
    		},
    	err_class_ignored = {
    		message = '<code class="cs1-code">&#124;class=</code> ignored',
    		anchor = 'class_ignored',
    		category = 'CS1 errors: class',
    		hidden = false
    		},
    	err_contributor_ignored = {
    		message = '<code class="cs1-code">&#124;contributor=</code> ignored',
    		anchor = 'contributor_ignored',
    		category = 'CS1 errors: contributor',
    		hidden = false
    		},
    	err_contributor_missing_required_param = {
    		message = '<code class="cs1-code">&#124;contributor=</code> requires <code class="cs1-code">&#124;$1=</code>',	-- $1 is parameter name
    		anchor = 'contributor_missing_required_param',
    		category = 'CS1 errors: contributor',
    		hidden = false
    		},
    	err_deprecated_params = {
    		message = 'Cite uses deprecated parameter <code class="cs1-code">&#124;$1=</code>',	-- $1 is parameter name
    		anchor = 'deprecated_params',
    		category = 'CS1 errors: deprecated parameters',
    		hidden = false
    		},
    	err_disp_name = {
    		message = 'Invalid <code class="cs1-code">&#124;$1=$2</code>',			-- $1 is parameter name; $2 is the assigned value
    		anchor = 'disp_name',
    		category = 'CS1 errors: display-names',
    		hidden = false,
    		},
    	err_doibroken_missing_doi = {
    		message = '<code class="cs1-code">&#124;$1=</code> requires <code class="cs1-code">&#124;doi=</code>',	-- $1 is parameter name
    		anchor = 'doibroken_missing_doi',
    		category = 'CS1 errors: DOI',
    		hidden = false
    		},
    	err_embargo_missing_pmc = {
    		message = '<code class="cs1-code">&#124;$1=</code> requires <code class="cs1-code">&#124;pmc=</code>',	-- $1 is parameter name
    		anchor = 'embargo_missing_pmc',
    		category = 'CS1 errors: PMC embargo',
    		hidden = false
    		},
    	err_empty_citation = {
    		message = 'Empty citation',
    		anchor = 'empty_citation',
    		category = 'CS1 errors: empty citation',
    		hidden = false
    		},
    	err_etal = {
    		message = 'Explicit use of et al. in: <code class="cs1-code">&#124;$1=</code>',	-- $1 is parameter name
    		anchor = 'explicit_et_al',
    		category = 'CS1 errors: explicit use of et al.',
    		hidden = false
    		},
    	err_extra_text_edition = {
    		message = '<code class="cs1-code">&#124;edition=</code> has extra text',
    		anchor = 'extra_text_edition',
    		category = 'CS1 errors: extra text: edition',
    		hidden = false,
    		},
    	err_extra_text_issue = {
    		message = '<code class="cs1-code">&#124;$1=</code> has extra text',		-- $1 is parameter name
    		anchor = 'extra_text_issue',
    		category = 'CS1 errors: extra text: issue',
    		hidden = false,
    		},
    	err_extra_text_pages = {
    		message = '<code class="cs1-code">&#124;$1=</code> has extra text',		-- $1 is parameter name
    		anchor = 'extra_text_pages',
    		category = 'CS1 errors: extra text: pages',
    		hidden = false,
    		},
    	err_extra_text_volume = {
    		message = '<code class="cs1-code">&#124;$1=</code> has extra text',		-- $1 is parameter name
    		anchor = 'extra_text_volume',
    		category = 'CS1 errors: extra text: volume',
    		hidden = true,
    		},
    	err_first_missing_last = {
    		message = '<code class="cs1-code">&#124;$1=</code> missing <code class="cs1-code">&#124;$2=</code>',	-- $1 is first alias, $2 is matching last alias
    		anchor = 'first_missing_last',
    		category = 'CS1 errors: missing name',									-- author, contributor, editor, interviewer, translator
    		hidden = false
    		},
    	err_format_missing_url = {
    		message = '<code class="cs1-code">&#124;$1=</code> requires <code class="cs1-code">&#124;$2=</code>',	-- $1 is format parameter $2 is url parameter
    		anchor = 'format_missing_url',
    		category = 'CS1 errors: format without URL',
    		hidden = false
    		},
    	err_generic_name = {
    		message = '<code class="cs1-code">&#124;$1=</code> has generic name',	-- $1 is parameter name
    		anchor = 'generic_name',
    		category = 'CS1 errors: generic name',
    		hidden = false,
    		},
    	err_generic_title = {
    		message = 'Cite uses generic title',
    		anchor = 'generic_title',
    		category = 'CS1 errors: generic title',
    		hidden = false,
    		},
    	err_invalid_param_val = {
    		message = 'Invalid <code class="cs1-code">&#124;$1=$2</code>',			-- $1 is parameter name $2 is parameter value
    		anchor = 'invalid_param_val',
    		category = 'CS1 errors: invalid parameter value',
    		hidden = false
    		},
    	err_invisible_char = {
    		message = '$1 in $2 at position $3',									-- $1 is invisible char $2 is parameter name $3 is position number
    		anchor = 'invisible_char',
    		category = 'CS1 errors: invisible characters',
    		hidden = false
    		},
    	err_missing_name = {
    		message = 'Missing <code class="cs1-code">&#124;$1$2=</code>',			-- $1 is modified NameList; $2 is enumerator
    		anchor = 'missing_name',
    		category = 'CS1 errors: missing name',									-- author, contributor, editor, interviewer, translator
    		hidden = false
    		},
    	err_missing_periodical = {
    		message = 'Cite $1 requires <code class="cs1-code">&#124;$2=</code>',	-- $1 is cs1 template name; $2 is canonical periodical parameter name for cite $1
    		anchor = 'missing_periodical',
    		category = 'CS1 errors: missing periodical',
    		hidden = true
    		},
    	err_missing_pipe = {
    		message = 'Missing pipe in: <code class="cs1-code">&#124;$1=</code>',	-- $1 is parameter name
    		anchor = 'missing_pipe',
    		category = 'CS1 errors: missing pipe',
    		hidden = false
    		},
    	err_param_access_requires_param = {
    		message = '<code class="cs1-code">&#124;$1-access=</code> requires <code class="cs1-code">&#124;$1=</code>',	-- $1 is parameter name
    		anchor = 'param_access_requires_param',
    		category = 'CS1 errors: param-access',
    		hidden = false
    		},
    	err_param_has_ext_link = {
    		message = 'External link in <code class="cs1-code">$1</code>',			-- $1 is parameter name
    		anchor = 'param_has_ext_link',
    		category = 'CS1 errors: external links',
    		hidden = false
    		},
    	err_parameter_ignored = {
    		message = 'Unknown parameter <code class="cs1-code">&#124;$1=</code> ignored',	-- $1 is parameter name
    		anchor = 'parameter_ignored',
    		category = 'CS1 errors: unsupported parameter',
    		hidden = false
    		},
    	err_parameter_ignored_suggest = {
    		message = 'Unknown parameter <code class="cs1-code">&#124;$1=</code> ignored (<code class="cs1-code">&#124;$2=</code> suggested)',	-- $1 is unknown parameter $2 is suggested parameter name
    		anchor = 'parameter_ignored_suggest',
    		category = 'CS1 errors: unsupported parameter',
    		hidden = false
    		},
    	err_redundant_parameters = {
    		message = 'More than one of $1 specified',								-- $1 is error message detail
    		anchor = 'redundant_parameters',
    		category = 'CS1 errors: redundant parameter',
    		hidden = false
    		},
    	err_script_parameter = {
    		message = 'Invalid <code class="cs1-code">&#124;$1=</code>: $2',		-- $1 is parameter name $2 is script language code or error detail
    		anchor = 'script_parameter',
    		category = 'CS1 errors: script parameters',
    		hidden = false
    		},
    	err_ssrn_missing = {
    		message = '<code class="cs1-code">&#124;ssrn=</code> required',
    		anchor = 'ssrn_missing',
    		category = 'CS1 errors: SSRN',											-- same as bad arxiv
    		hidden = false
    		},
    	err_text_ignored = {
    		message = 'Text "$1" ignored',											-- $1 is ignored text
    		anchor = 'text_ignored',
    		category = 'CS1 errors: unrecognized parameter',
    		hidden = false
    		},
    	err_trans_missing_title = {
    		message = '<code class="cs1-code">&#124;trans-$1=</code> requires <code class="cs1-code">&#124;$1=</code> or <code class="cs1-code">&#124;script-$1=</code>',	-- $1 is base parameter name
    		anchor = 'trans_missing_title',
    		category = 'CS1 errors: translated title',
    		hidden = false
    		},
    	err_param_unknown_empty = {
    		message = 'Cite has empty unknown parameter$1: $2',						-- $1 is 's' or empty space; $2 is emty unknown param list
    		anchor = 'param_unknown_empty',
    		category = 'CS1 errors: empty unknown parameters',
    		hidden = false
    		},
    	err_vancouver = {
    		message = 'Vancouver style error: $1 in name $2',						-- $1 is error detail, $2 is the nth name
    		anchor = 'vancouver',
    		category = 'CS1 errors: Vancouver style',
    		hidden = false
    		},
    	err_wikilink_in_url = {
    		message = 'URL–wikilink conflict',										-- uses ndash
    		anchor = 'wikilink_in_url',
    		category = 'CS1 errors: URL–wikilink conflict',							-- uses ndash
    		hidden = false
    		},
    
    
    --[[--------------------------< M A I N T >-------------------------------------
    
    maint messages do not have a message (message = nil); otherwise the structure
    is the same as error messages
    
    ]]
    
    	maint_archived_copy = {
    		message = nil,
    		anchor = 'archived_copy',
    		category = 'CS1 maint: archived copy as title',
    		hidden = true,
    		},
    	maint_authors = {
    		message = nil,
    		anchor = 'authors',
    		category = 'CS1 maint: uses authors parameter',
    		hidden = true,
    		},
    	maint_bot_unknown = {
    		message = nil,
    		anchor = 'bot:_unknown',
    		category = 'CS1 maint: bot: original URL status unknown',
    		hidden = true,
    		},
    	maint_date_auto_xlated = {													-- date auto-translation not supported by en.wiki
    		message = nil,
    		anchor = 'date_auto_xlated',
    		category = 'CS1 maint: date auto-translated',
    		hidden = true,
    		},
    	maint_date_format = {
    		message = nil,
    		anchor = 'date_format',
    		category = 'CS1 maint: date format',
    		hidden = true,
    		},
    	maint_date_year = {
    		message = nil,
    		anchor = 'date_year',
    		category = 'CS1 maint: date and year',
    		hidden = true,
    		},
    	maint_doi_ignore = {
    		message = nil,
    		anchor = 'doi_ignore',
    		category = 'CS1 maint: ignored DOI errors',
    		hidden = true,
    		},
    	maint_doi_inactive = {
    		message = nil,
    		anchor = 'doi_inactive',
    		category = 'CS1 maint: DOI inactive',
    		hidden = true,
    		},
    	maint_doi_inactive_dated = {
    		message = nil,
    		anchor = 'doi_inactive_dated',
    		category = 'CS1 maint: DOI inactive as of $2$3$1',						-- $1 is year, $2 is month-name or empty string, $3 is space or empty string
    		hidden = true,
    		},
    	maint_extra_punct = {
    		message = nil,
    		anchor = 'extra_punct',
    		category = 'CS1 maint: extra punctuation',
    		hidden = true,
    		},
    	maint_isbn_ignore = {
    		message = nil,
    		anchor = 'ignore_isbn_err',
    		category = 'CS1 maint: ignored ISBN errors',
    		hidden = true,
    		},
    	maint_issn_ignore = {
    		message = nil,
    		anchor = 'ignore_issn',
    		category = 'CS1 maint: ignored ISSN errors',
    		hidden = true,
    		},
    	maint_jfm_format = {
    		message = nil,
    		anchor = 'jfm_format',
    		category = 'CS1 maint: JFM format',
    		hidden = true,
    		},
    	maint_location = {
    		message = nil,
    		anchor = 'location',
    		category = 'CS1 maint: location',
    		hidden = true,
    		},
    	maint_mr_format = {
    		message = nil,
    		anchor = 'mr_format',
    		category = 'CS1 maint: MR format',
    		hidden = true,
    		},
    	maint_mult_names = {
    		message = nil,
    		anchor = 'mult_names',
    		category = 'CS1 maint: multiple names: $1',								-- $1 is '<name>s list'; gets value from special_case_translation table
    		hidden = true,
    		},
    	maint_numeric_names = {
    		message = nil,
    		anchor = 'numeric_names',
    		category = 'CS1 maint: numeric names: $1',								-- $1 is '<name>s list'; gets value from special_case_translation table
    		hidden = true,
    		},
    	maint_others = {
    		message = nil,
    		anchor = 'others',
    		category = 'CS1 maint: others',
    		hidden = true,
    		},
    	maint_others_avm = {
    		message = nil,
    		anchor = 'others_avm',
    		category = 'CS1 maint: others in cite AV media (notes)',
    		hidden = true,
    		},
    	maint_pmc_embargo = {
    		message = nil,
    		anchor = 'embargo',
    		category = 'CS1 maint: PMC embargo expired',
    		hidden = true,
    		},
    	maint_pmc_format = {
    		message = nil,
    		anchor = 'pmc_format',
    		category = 'CS1 maint: PMC format',
    		hidden = true,
    		},
    	maint_postscript = {
    		message = nil,
    		anchor = 'postscript',
    		category = 'CS1 maint: postscript',
    		hidden = true,
    	},
    	maint_ref_duplicates_default = {
    		message = nil,
    		anchor = 'ref_default',
    		category = 'CS1 maint: ref duplicates default',
    		hidden = true,
    	},
    	maint_unfit = {
    		message = nil,
    		anchor = 'unfit',
    		category = 'CS1 maint: unfit URL',
    		hidden = true,
    		},
    	maint_unknown_lang = {
    		message = nil,
    		anchor = 'unknown_lang',
    		category = 'CS1 maint: unrecognized language',
    		hidden = true,
    		},
    	maint_untitled = {
    		message = nil,
    		anchor = 'untitled',
    		category = 'CS1 maint: untitled periodical',
    		hidden = true,
    		},
    	maint_url_status = {
    		message = nil,
    		anchor = 'url_status',
    		category = 'CS1 maint: url-status',
    		hidden = true,
    		},
    	maint_zbl = {
    		message = nil,
    		anchor = 'zbl',
    		category = 'CS1 maint: Zbl',
    		hidden = true,
    		},
    	}
    
    
    --[[--------------------------< I D _ H A N D L E R S >--------------------------------------------------------
    
    The following contains a list of values for various defined identifiers.  For each
    identifier we specify a variety of information necessary to properly render the
    identifier in the citation.
    
    	parameters: a list of parameter aliases for this identifier; first in the list is the canonical form
    	link: Wikipedia article name
    	redirect: a local redirect to a local Wikipedia article name;  at en.wiki, 'ISBN (identifier)' is a redirect to 'International Standard Book Number'
    	q: Wikidata q number for the identifier
    	label: the label preceding the identifier; label is linked to a Wikipedia article (in this order):
    		redirect from id_handlers['<id>'].redirect when use_identifier_redirects is true
    		Wikidata-supplied article name for the local wiki from id_handlers['<id>'].q
    		local article name from id_handlers['<id>'].link
    	prefix: the first part of a URL that will be concatenated with a second part which usually contains the identifier
    	suffix: optional third part to be added after the identifier
    	encode: true if URI should be percent-encoded; otherwise false
    	COinS: identifier link or keyword for use in COinS:
    		for identifiers registered at info-uri.info use: info:.... where '...' is the appropriate identifier label 
    		for identifiers that have COinS keywords, use the keyword: rft.isbn, rft.issn, rft.eissn
    		for |asin= and |ol=, which require assembly, use the keyword: url
    		for others make a URL using the value in prefix/suffix and #label, use the keyword: pre (not checked; any text other than 'info', 'rft', or 'url' works here)
    		set to nil to leave the identifier out of the COinS
    	separator: character or text between label and the identifier in the rendered citation
    	id_limit: for those identifiers with established limits, this property holds the upper limit
    	access: use this parameter to set the access level for all instances of this identifier.
    		the value must be a valid access level for an identifier (see ['id-access'] in this file).
    	custom_access: to enable custom access level for an identifier, set this parameter
    		to the parameter that should control it (normally 'id-access')
    		
    ]]
    
    local id_handlers = {
    	['ARXIV'] = {
    		parameters = {'arxiv', 'eprint'},
    		link = 'arXiv',
    		redirect = 'arXiv (identifier)',
    		q = 'Q118398',
    		label = 'arXiv',
    		prefix = '//arxiv.org/abs/', 											-- protocol-relative tested 2013-09-04
    		encode = false,
    		COinS = 'info:arxiv',
    		separator = ':',
    		access = 'free',														-- free to read
    		},
    	['ASIN'] = {
    		parameters = { 'asin', 'ASIN' },
    		link = 'Amazon Standard Identification Number',
    		redirect = 'ASIN (identifier)',
    		q = 'Q1753278',
    		label = 'ASIN',
    		prefix = '//www.amazon.',
    		COinS = 'url',
    		separator = '&nbsp;',
    		encode = false;
    		},
    	['BIBCODE'] = {
    		parameters = {'bibcode'},
    		link = 'Bibcode',
    		redirect = 'Bibcode (identifier)',
    		q = 'Q25754',
    		label = 'Bibcode',
    		prefix = 'https://ui.adsabs.harvard.edu/abs/',
    		encode = false,
    		COinS = 'info:bibcode',
    		separator = ':',
    		custom_access = 'bibcode-access',
    		},
    	['BIORXIV'] = {
    		parameters = {'biorxiv'},
    		link = 'bioRxiv',
    		redirect = 'bioRxiv (identifier)',
    		q = 'Q19835482',
    		label = 'bioRxiv',
    		prefix = '//doi.org/',
    		COinS = 'pre',															-- use prefix value
    		access = 'free',														-- free to read
    		encode = true,
    		separator = '&nbsp;',
    		},
    	['CITESEERX'] = {
    		parameters = {'citeseerx'},
    		link = 'CiteSeerX',
    		redirect = 'CiteSeerX (identifier)',
    		q = 'Q2715061',
    		label = 'CiteSeerX',
    		prefix = '//citeseerx.ist.psu.edu/viewdoc/summary?doi=',
    		COinS =  'pre',															-- use prefix value
    		access = 'free',														-- free to read
    		encode = true,
    		separator = '&nbsp;',
    		},
    	['DOI'] = {																	-- Used by InternetArchiveBot
    		parameters = { 'doi', 'DOI'},
    		link = 'Digital object identifier',
    		redirect = 'doi (identifier)',
    		q = 'Q25670',
    		label = 'doi',
    		prefix = '//doi.org/',
    		COinS = 'info:doi',
    		separator = ':',
    		encode = true,
    		custom_access = 'doi-access',
    		},
    	['EISSN'] = {
    		parameters = {'eissn', 'EISSN'},
    		link = 'International Standard Serial Number#Electronic ISSN',
    		redirect = 'eISSN (identifier)',
    		q = 'Q46339674',
    		label = 'eISSN',
    		prefix = '//www.worldcat.org/issn/',
    		COinS = 'rft.eissn',
    		encode = false,
    		separator = '&nbsp;',
    		},
    	['HDL'] = {
    		parameters = { 'hdl', 'HDL' },
    		link = 'Handle System',
    		redirect = 'hdl (identifier)',
    		q = 'Q3126718',
    		label = 'hdl',
    		prefix = '//hdl.handle.net/',
    		COinS = 'info:hdl',
    		separator = ':',
    		encode = true,
    		custom_access = 'hdl-access',
    		},
    	['ISBN'] = {																-- Used by InternetArchiveBot
    		parameters = {'isbn', 'ISBN'},
    		link = 'International Standard Book Number',
    		redirect = 'ISBN (identifier)',
    		q = 'Q33057',
    		label = 'ISBN',
    		prefix = 'Special:BookSources/',
    		COinS = 'rft.isbn',
    		separator = '&nbsp;',
    		},
    	['ISMN'] = {
    		parameters = {'ismn', 'ISMN'},
    		link = 'International Standard Music Number',
    		redirect = 'ISMN (identifier)',
    		q = 'Q1666938',
    		label = 'ISMN',
    		prefix = '',															-- not currently used;
    		COinS = nil,															-- nil because we can't use pre or rft or info:
    		separator = '&nbsp;',
    		},
    	['ISSN'] = {
    		parameters = {'issn', 'ISSN'},
    		link = 'International Standard Serial Number',
    		redirect = 'ISSN (identifier)',
    		q = 'Q131276',
    		label = 'ISSN',
    		prefix = '//www.worldcat.org/issn/',
    		COinS = 'rft.issn',
    		encode = false,
    		separator = '&nbsp;',
    		},
    	['JFM'] = {
    		parameters = {'jfm', 'JFM'},
    		link = 'Jahrbuch über die Fortschritte der Mathematik',
    		redirect = 'JFM (identifier)',
    		q = '',
    		label = 'JFM',
    		prefix = '//zbmath.org/?format=complete&q=an:',
    		COinS = 'pre',															-- use prefix value
    		encode = true,
    		separator = '&nbsp;',
    		},
    	['JSTOR'] = {
    		parameters = {'jstor', 'JSTOR'},
    		link = 'JSTOR',
    		redirect = 'JSTOR (identifier)',
    		q = 'Q1420342',
    		label = 'JSTOR',
    		prefix = '//www.jstor.org/stable/', 									-- protocol-relative tested 2013-09-04
    		COinS = 'pre',															-- use prefix value
    		encode = false,
    		separator = '&nbsp;',
    		custom_access = 'jstor-access',
    		},
    	['LCCN'] = {
    		parameters = {'lccn', 'LCCN'},
    		link = 'Library of Congress Control Number',
    		redirect = 'LCCN (identifier)',
    		q = 'Q620946',
    		label = 'LCCN',
    		prefix = '//lccn.loc.gov/', 											-- protocol-relative tested 2015-12-28
    		COinS = 'info:lccn',
    		encode = false,
    		separator = '&nbsp;',
    		},
    	['MR'] = {
    		parameters = {'mr', 'MR'},
    		link = 'Mathematical Reviews',
    		redirect = 'MR (identifier)',
    		q = 'Q211172',
    		label = 'MR',
    		prefix = '//www.ams.org/mathscinet-getitem?mr=', 						-- protocol-relative tested 2013-09-04
    		COinS = 'pre',															-- use prefix value
    		encode = true,
    		separator = '&nbsp;',
    		},
    	['OCLC'] = {
    		parameters = {'oclc', 'OCLC'},
    		link = 'OCLC',
    		redirect = 'OCLC (identifier)',
    		q = 'Q190593',
    		label = 'OCLC',
    		prefix = '//www.worldcat.org/oclc/',
    		COinS = 'info:oclcnum',
    		encode = true,
    		separator = '&nbsp;',
    		id_limit = 9999999999,													-- 10-digits
    		},
    	['OL'] = {
    		parameters = { 'ol', 'OL' },
    		link = 'Open Library',
    		redirect = 'OL (identifier)',
    		q = 'Q1201876',
    		label = 'OL',
    		prefix = '//openlibrary.org/',
    		COinS = 'url',
    		separator = '&nbsp;',
    		encode = true,
    		custom_access = 'ol-access',
    		},
    	['OSTI'] = {
    		parameters = {'osti', 'OSTI'},
    		link = 'Office of Scientific and Technical Information',
    		redirect = 'OSTI (identifier)',
    		q = 'Q2015776',
    		label = 'OSTI',
    		prefix = '//www.osti.gov/biblio/',										-- protocol-relative tested 2018-09-12
    		COinS = 'pre',															-- use prefix value
    		encode = true,
    		separator = '&nbsp;',
    		id_limit = 23010000,
    		custom_access = 'osti-access',
    		},
    	['PMC'] = {
    		parameters = {'pmc', 'PMC'},
    		link = 'PubMed Central',
    		redirect = 'PMC (identifier)',
    		q = 'Q229883',
    		label = 'PMC',
    		prefix = '//www.ncbi.nlm.nih.gov/pmc/articles/PMC',
    		suffix = '',
    		COinS = 'pre',															-- use prefix value
    		encode = true,
    		separator = '&nbsp;',
    		id_limit = 9700000,
    		access = 'free',														-- free to read
    		},
    	['PMID'] = {
    		parameters = {'pmid', 'PMID'},
    		link = 'PubMed Identifier',
    		redirect = 'PMID (identifier)',
    		q = 'Q2082879',
    		label = 'PMID',
    		prefix = '//pubmed.ncbi.nlm.nih.gov/',
    		COinS = 'info:pmid',
    		encode = false,
    		separator = '&nbsp;',
    		id_limit = 36400000,
    		},
    	['RFC'] = {
    		parameters = {'rfc', 'RFC'},
    		link = 'Request for Comments',
    		redirect = 'RFC (identifier)',
    		q = 'Q212971',
    		label = 'RFC',
    		prefix = '//tools.ietf.org/html/rfc',
    		COinS = 'pre',															-- use prefix value
    		encode = false,
    		separator = '&nbsp;',
    		id_limit = 9300,
    		access = 'free',														-- free to read
    		},
    	['SBN'] = {
    		parameters = {'sbn', 'SBN'},
    		link = 'Standard Book Number',											-- redirect to International_Standard_Book_Number#History
    		redirect = 'SBN (identifier)',
    		label = 'SBN',
    		prefix = 'Special:BookSources/0-',										-- prefix has leading zero necessary to make 9-digit sbn a 10-digit isbn
    		COinS = nil,															-- nil because we can't use pre or rft or info:
    		separator = '&nbsp;',
    		},
    	['SSRN'] = {
    		parameters = {'ssrn', 'SSRN'},
    		link = 'Social Science Research Network',
    		redirect = 'SSRN (identifier)',
    		q = 'Q7550801',
    		label = 'SSRN',
    		prefix = '//papers.ssrn.com/sol3/papers.cfm?abstract_id=',
    		COinS = 'pre',															-- use prefix value
    		encode = true,
    		separator = '&nbsp;',
    		id_limit = 4300000,
    		custom_access = 'ssrn-access',
    		},
    	['S2CID'] = {
    		parameters = {'s2cid', 'S2CID'},
    		link = 'Semantic Scholar',
    		redirect = 'S2CID (identifier)',
    		q = 'Q22908627',
    		label = 'S2CID',
    		prefix = 'https://api.semanticscholar.org/CorpusID:',
    		COinS = 'pre',															-- use prefix value
    		encode = false,
    		separator = '&nbsp;',
    		id_limit = 254000000,
    		custom_access = 's2cid-access',
    		},
    	['USENETID'] = {
    		parameters = {'message-id'},
    		link = 'Usenet',
    		redirect = 'Usenet (identifier)',
    		q = 'Q193162',
    		label = 'Usenet:',
    		prefix = 'news:',
    		encode = false,
    		COinS = 'pre',															-- use prefix value
    		separator = '&nbsp;',
    		},
    	['ZBL'] = {
    		parameters = {'zbl', 'ZBL' },
    		link = 'Zentralblatt MATH',
    		redirect = 'Zbl (identifier)',
    		q = 'Q190269',
    		label = 'Zbl',
    		prefix = '//zbmath.org/?format=complete&q=an:',
    		COinS = 'pre',															-- use prefix value
    		encode = true,
    		separator = '&nbsp;',
    		},
    	}
    
    
    --[[--------------------------< E X P O R T S >---------------------------------
    ]]
    
    return 	{
    	use_identifier_redirects = true,											-- when true use redirect name for identifier label links; always true at en.wiki
    	local_lang_cat_enable = false;												-- when true categorizes pages where |language=<local wiki's language>; always false at en.wiki
    	date_name_auto_xlate_enable = false;										-- when true translates English month-names to the local-wiki's language month names; always false at en.wiki
    	date_digit_auto_xlate_enable = false;										-- when true translates Western date digit to the local-wiki's language digits (date_names['local_digits']); always false at en.wiki
    	
    																				-- tables and variables created when this module is loaded
    	global_df = get_date_format (),												-- this line can be replaced with "global_df = 'dmy-all'," to have all dates auto translated to dmy format.
    	punct_skip = build_skip_table (punct_skip, punct_meta_params),
    	url_skip = build_skip_table (url_skip, url_meta_params),
    
    	aliases = aliases,
    	special_case_translation = special_case_translation,
    	date_names = date_names,
    	err_msg_supl = err_msg_supl,
    	error_conditions = error_conditions,
    	editor_markup_patterns = editor_markup_patterns,
    	et_al_patterns = et_al_patterns,
    	id_handlers = id_handlers,
    	keywords_lists = keywords_lists,
    	keywords_xlate = keywords_xlate,
    	stripmarkers = stripmarkers,
    	invisible_chars = invisible_chars,
    	invisible_defs = invisible_defs,
    	indic_script = indic_script,
    	emoji_t = emoji_t,
    	maint_cats = maint_cats,
    	messages = messages,
    	presentation = presentation,
    	prop_cats = prop_cats,
    	script_lang_codes = script_lang_codes,
    	lang_code_remap = lang_code_remap,
    	lang_name_remap = lang_name_remap,
    	this_wiki_code = this_wiki_code,
    	title_types = title_types,
    	uncategorized_namespaces = uncategorized_namespaces_t,
    	uncategorized_subpages = uncategorized_subpages,
    	templates_using_volume = templates_using_volume,
    	templates_using_issue = templates_using_issue,
    	templates_not_using_page = templates_not_using_page,
    	vol_iss_pg_patterns = vol_iss_pg_patterns,
    	single_letter_2nd_lvl_domains_t = single_letter_2nd_lvl_domains_t,
    	
    	inter_wiki_map = inter_wiki_map,
    	mw_languages_by_tag_t = mw_languages_by_tag_t,
    	mw_languages_by_name_t = mw_languages_by_name_t,
    	citation_class_map_t = citation_class_map_t,
    
    	citation_issue_t = citation_issue_t,
    	citation_no_volume_t = citation_no_volume_t,
    	}
    
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