<relation>

Describes a relationship or linkage amongst entities.
Module
Attributes
analog, auth, auth.uri, cert, class, codedval, copyof, corresp, enddate, evaluate, evidence, follows, isodate, label, n, next, notafter, notbefore, plist, precedes, prev, rel, resp, sameas, startdate, synch, target, targettype, type, xlink:actuate, xlink:role, xlink:show, xml:base, xml:id
analog(optional)Contains a reference to a field or element in another descriptive encoding system to which this MEI element is comparable. Value is plain text.
auth(optional)A name or label associated with a controlled vocabulary or other authoritative source for this element or its content. Value is plain text.
auth.uri(optional)A web-accessible location of the controlled vocabulary or other authoritative source of identification or definition for this element or its content. This attribute may contain a complete URI or a partial URI which is completed by the value of the codedval attribute. Value conforms to data.URI.
cert(optional)Signifies the degree of certainty or precision associated with a feature. Value conforms to data.CERTAINTY.
class(optional)Contains one or more URIs which denote classification terms that apply to the entity bearing this attribute. One or more values from data.URI, separated by spaces.
codedval(optional)A value that represents or identifies other data. Often, it is a primary key in the database or a unique value in the coded list identified by the auth or auth.uri attributes. One or more values of datatype NMTOKEN, separated by spaces.
copyof(optional)Points to an element of which the current element is a copy. Value conforms to data.URI.
corresp(optional)Used to point to other elements that correspond to this one in a generic fashion. One or more values from data.URI, separated by spaces.
enddate(optional)Contains the end point of a date range in standard ISO form. Value conforms to data.ISODATE.
evaluate(optional)Specifies the intended meaning when a participant in a relationship is itself a pointer. Allowed values are: "all" (If an element pointed to is itself a pointer, then the target of that pointer will be taken, and so on, until an element is found which is not a pointer.), "one" (If an element pointed to is itself a pointer, then its target (whether a pointer or not) is taken as the target of this pointer.), "none" (No further evaluation of targets is carried out beyond that needed to find the element(s) specified in plist or target attribute.)
evidence(optional)Indicates the nature of the evidence supporting the reliability or accuracy of the intervention or interpretation. Suggested values are: "internal" (There is evidence within the document to support the intervention.), "external" (There is evidence outside the document to support the intervention.), "conjecture" (The assertion has been made by the editor, cataloguer, or scholar on the basis of their expertise.)
follows(optional)points to one or more events in a user-defined collection that are known to be predecessors of the current element. One or more values from data.URI, separated by spaces.
isodate(optional)Provides the value of a textual date in standard ISO form. Value conforms to data.ISODATE.
label(optional)Captures text to be used to generate a label for the element to which it’s attached, a "tool tip" or prefatory text, for example. Should not be used to record document content. Value is plain text.
n(optional)Provides a number-like designation that indicates an element’s position in a sequence of similar elements. May not contain space characters. Value conforms to data.WORD.
next(optional)Used to point to the next event(s) in a user-defined collection. One or more values from data.URI, separated by spaces.
notafter(optional)Contains an upper boundary for an uncertain date in standard ISO form. Value conforms to data.ISODATE.
notbefore(optional)Contains a lower boundary, in standard ISO form, for an uncertain date. Value conforms to data.ISODATE.
plist(optional)When the target attribute is present, plist identifies the active participants; that is, those entities pointed "from", in a relationship with the specified target(s). When the target attribute is not present, it identifies participants in a mutual relationship. One or more values from data.URI, separated by spaces.
precedes(optional)Points to one or more events in a user-defined collection that are known to be successors of the current element. One or more values from data.URI, separated by spaces.
prev(optional)Points to the previous event(s) in a user-defined collection. One or more values from data.URI, separated by spaces.
rel(required)Describes the relationship between the entities identified by the plist and target attributes. Value conforms to data.RELATIONSHIP.
resp(optional)Indicates the agent(s) responsible for some aspect of the text’s transcription, editing, or encoding. Its value must point to one or more identifiers declared in the document header. One or more values from data.URI, separated by spaces.
sameas(optional)Points to an element that is the same as the current element but is not a literal copy of the current element. One or more values from data.URI, separated by spaces.
startdate(optional)Contains the starting point of a date range in standard ISO form. Value conforms to data.ISODATE.
synch(optional)Points to elements that are synchronous with the current element. One or more values from data.URI, separated by spaces.
target(optional)Identifies passive participants in a relationship; that is, the entities pointed "to". One or more values from data.URI, separated by spaces.
targettype(optional)Characterization of target resource(s) using any convenient classification scheme or typology. Value is a NMTOKEN.
type(optional)Designation which characterizes the element in some sense, using any convenient classification scheme or typology that employs single-token labels. One or more values of datatype NMTOKEN, separated by spaces.
xlink:actuate(optional)Defines whether a link occurs automatically or must be requested by the user. Allowed values are: "onLoad" (Load the target resource(s) immediately.), "onRequest" (Load the target resource(s) upon user request.), "none" (Do not permit loading of the target resource(s).), "other" (Behavior other than allowed by the other values of this attribute.)
xlink:role(optional)Characterization of the relationship between resources. The value of the role attribute must be a URI. Value conforms to data.URI.
xlink:show(optional)Defines how a remote resource is rendered. Allowed values are: "new" (Open in a new window.), "replace" (Load the referenced resource in the same window.), "embed" (Embed the referenced resource at the point of the link.), "none" (Do not permit traversal to the referenced resource.), "other" (Behavior other than permitted by the other values of this attribute.)
xml:base(optional)Provides a base URI reference with which applications can resolve relative URI references into absolute URI references. Value conforms to data.URI.
xml:id(optional)Regularizes the naming of an element and thus facilitates building links between it and other resources. Each id attribute within a document must have a unique value. Value is a valid xml:id.
rel(required)Describes the relationship between the entities identified by the plist and target attributes. Value conforms to data.RELATIONSHIP.
(MEI.shared) Attributes common to many elements.
(MEI.shared) Attributes that form the basis of the att.common class.
xml:base(optional)Provides a base URI reference with which applications can resolve relative URI references into absolute URI references. Value conforms to data.URI.
(MEI.shared) Attributes that uniquely identify an element.
xml:id(optional)Regularizes the naming of an element and thus facilitates building links between it and other resources. Each id attribute within a document must have a unique value. Value is a valid xml:id.
(MEI.shared)
label(optional)Captures text to be used to generate a label for the element to which it’s attached, a "tool tip" or prefatory text, for example. Should not be used to record document content. Value is plain text.
(MEI.shared) Attributes that specify element-to-element relationships.
copyof(optional)Points to an element of which the current element is a copy. Value conforms to data.URI.
corresp(optional)Used to point to other elements that correspond to this one in a generic fashion. One or more values from data.URI, separated by spaces.
follows(optional)points to one or more events in a user-defined collection that are known to be predecessors of the current element. One or more values from data.URI, separated by spaces.
next(optional)Used to point to the next event(s) in a user-defined collection. One or more values from data.URI, separated by spaces.
precedes(optional)Points to one or more events in a user-defined collection that are known to be successors of the current element. One or more values from data.URI, separated by spaces.
prev(optional)Points to the previous event(s) in a user-defined collection. One or more values from data.URI, separated by spaces.
sameas(optional)Points to an element that is the same as the current element but is not a literal copy of the current element. One or more values from data.URI, separated by spaces.
synch(optional)Points to elements that are synchronous with the current element. One or more values from data.URI, separated by spaces.
(MEI.shared) Attributes used to supply a number-like designation for an element.
n(optional)Provides a number-like designation that indicates an element’s position in a sequence of similar elements. May not contain space characters. Value conforms to data.WORD.
(MEI.shared) Attributes capturing information regarding responsibility for some aspect of the text's creation, transcription, editing, or encoding.
resp(optional)Indicates the agent(s) responsible for some aspect of the text’s transcription, editing, or encoding. Its value must point to one or more identifiers declared in the document header. One or more values from data.URI, separated by spaces.
(MEI.shared) Attributes which can be used to classify features.
type(optional)Designation which characterizes the element in some sense, using any convenient classification scheme or typology that employs single-token labels. One or more values of datatype NMTOKEN, separated by spaces.
(MEI.shared) Attributes which can be used to classify features.
class(optional)Contains one or more URIs which denote classification terms that apply to the entity bearing this attribute. One or more values from data.URI, separated by spaces.
(MEI.shared) Attributes that describe the source of a controlled value.
auth(optional)A name or label associated with a controlled vocabulary or other authoritative source for this element or its content. Value is plain text.
auth.uri(optional)A web-accessible location of the controlled vocabulary or other authoritative source of identification or definition for this element or its content. This attribute may contain a complete URI or a partial URI which is completed by the value of the codedval attribute. Value conforms to data.URI.
(MEI.shared) Attributes that can be used to associate a representation such as a name or title with canonical information about the object being named or referenced.
codedval(optional)A value that represents or identifies other data. Often, it is a primary key in the database or a unique value in the coded list identified by the auth or auth.uri attributes. One or more values of datatype NMTOKEN, separated by spaces.
(MEI.shared) Bibliographic attributes.
analog(optional)Contains a reference to a field or element in another descriptive encoding system to which this MEI element is comparable. Value is plain text.
(MEI.shared) Attributes common to dates.
enddate(optional)Contains the end point of a date range in standard ISO form. Value conforms to data.ISODATE.
isodate(optional)Provides the value of a textual date in standard ISO form. Value conforms to data.ISODATE.
notafter(optional)Contains an upper boundary for an uncertain date in standard ISO form. Value conforms to data.ISODATE.
notbefore(optional)Contains a lower boundary, in standard ISO form, for an uncertain date. Value conforms to data.ISODATE.
startdate(optional)Contains the starting point of a date range in standard ISO form. Value conforms to data.ISODATE.
(MEI.shared) Attributes describing the support for and the certainty of an assertion.
cert(optional)Signifies the degree of certainty or precision associated with a feature. Value conforms to data.CERTAINTY.
evidence(optional)Indicates the nature of the evidence supporting the reliability or accuracy of the intervention or interpretation. Suggested values are: "internal" (There is evidence within the document to support the intervention.), "external" (There is evidence outside the document to support the intervention.), "conjecture" (The assertion has been made by the editor, cataloguer, or scholar on the basis of their expertise.)
(MEI.shared) Attributes listing the active participants in a user-defined collection.
plist(optional)When the target attribute is present, plist identifies the active participants; that is, those entities pointed "from", in a relationship with the specified target(s). When the target attribute is not present, it identifies participants in a mutual relationship. One or more values from data.URI, separated by spaces.
(MEI.shared) Attributes common to all pointing/linking elements.
xlink:actuate(optional)Defines whether a link occurs automatically or must be requested by the user. Allowed values are: "onLoad" (Load the target resource(s) immediately.), "onRequest" (Load the target resource(s) upon user request.), "none" (Do not permit loading of the target resource(s).), "other" (Behavior other than allowed by the other values of this attribute.)
xlink:role(optional)Characterization of the relationship between resources. The value of the role attribute must be a URI. Value conforms to data.URI.
xlink:show(optional)Defines how a remote resource is rendered. Allowed values are: "new" (Open in a new window.), "replace" (Load the referenced resource in the same window.), "embed" (Embed the referenced resource at the point of the link.), "none" (Do not permit traversal to the referenced resource.), "other" (Behavior other than permitted by the other values of this attribute.)
target(optional)Identifies passive participants in a relationship; that is, the entities pointed "to". One or more values from data.URI, separated by spaces.
targettype(optional)Characterization of target resource(s) using any convenient classification scheme or typology. Value is a NMTOKEN.
(MEI.shared) Attributes that deal with resolution of values in plist or target attributes.
evaluate(optional)Specifies the intended meaning when a participant in a relationship is itself a pointer. Allowed values are: "all" (If an element pointed to is itself a pointer, then the target of that pointer will be taken, and so on, until an element is found which is not a pointer.), "one" (If an element pointed to is itself a pointer, then its target (whether a pointer or not) is taken as the target of this pointer.), "none" (No further evaluation of targets is carried out beyond that needed to find the element(s) specified in plist or target attribute.)
Component declarations that are shared between two or more modules.
analog(optional)Contains a reference to a field or element in another descriptive encoding system to which this MEI element is comparable. Value is plain text.
auth(optional)A name or label associated with a controlled vocabulary or other authoritative source for this element or its content. Value is plain text.
auth.uri(optional)A web-accessible location of the controlled vocabulary or other authoritative source of identification or definition for this element or its content. This attribute may contain a complete URI or a partial URI which is completed by the value of the codedval attribute. Value conforms to data.URI.
cert(optional)Signifies the degree of certainty or precision associated with a feature. Value conforms to data.CERTAINTY.
class(optional)Contains one or more URIs which denote classification terms that apply to the entity bearing this attribute. One or more values from data.URI, separated by spaces.
codedval(optional)A value that represents or identifies other data. Often, it is a primary key in the database or a unique value in the coded list identified by the auth or auth.uri attributes. One or more values of datatype NMTOKEN, separated by spaces.
copyof(optional)Points to an element of which the current element is a copy. Value conforms to data.URI.
corresp(optional)Used to point to other elements that correspond to this one in a generic fashion. One or more values from data.URI, separated by spaces.
enddate(optional)Contains the end point of a date range in standard ISO form. Value conforms to data.ISODATE.
evaluate(optional)Specifies the intended meaning when a participant in a relationship is itself a pointer. Allowed values are: "all" (If an element pointed to is itself a pointer, then the target of that pointer will be taken, and so on, until an element is found which is not a pointer.), "one" (If an element pointed to is itself a pointer, then its target (whether a pointer or not) is taken as the target of this pointer.), "none" (No further evaluation of targets is carried out beyond that needed to find the element(s) specified in plist or target attribute.)
evidence(optional)Indicates the nature of the evidence supporting the reliability or accuracy of the intervention or interpretation. Suggested values are: "internal" (There is evidence within the document to support the intervention.), "external" (There is evidence outside the document to support the intervention.), "conjecture" (The assertion has been made by the editor, cataloguer, or scholar on the basis of their expertise.)
follows(optional)points to one or more events in a user-defined collection that are known to be predecessors of the current element. One or more values from data.URI, separated by spaces.
isodate(optional)Provides the value of a textual date in standard ISO form. Value conforms to data.ISODATE.
label(optional)Captures text to be used to generate a label for the element to which it’s attached, a "tool tip" or prefatory text, for example. Should not be used to record document content. Value is plain text.
n(optional)Provides a number-like designation that indicates an element’s position in a sequence of similar elements. May not contain space characters. Value conforms to data.WORD.
next(optional)Used to point to the next event(s) in a user-defined collection. One or more values from data.URI, separated by spaces.
notafter(optional)Contains an upper boundary for an uncertain date in standard ISO form. Value conforms to data.ISODATE.
notbefore(optional)Contains a lower boundary, in standard ISO form, for an uncertain date. Value conforms to data.ISODATE.
plist(optional)When the target attribute is present, plist identifies the active participants; that is, those entities pointed "from", in a relationship with the specified target(s). When the target attribute is not present, it identifies participants in a mutual relationship. One or more values from data.URI, separated by spaces.
precedes(optional)Points to one or more events in a user-defined collection that are known to be successors of the current element. One or more values from data.URI, separated by spaces.
prev(optional)Points to the previous event(s) in a user-defined collection. One or more values from data.URI, separated by spaces.
rel(required)Describes the relationship between the entities identified by the plist and target attributes. Value conforms to data.RELATIONSHIP.
resp(optional)Indicates the agent(s) responsible for some aspect of the text’s transcription, editing, or encoding. Its value must point to one or more identifiers declared in the document header. One or more values from data.URI, separated by spaces.
sameas(optional)Points to an element that is the same as the current element but is not a literal copy of the current element. One or more values from data.URI, separated by spaces.
startdate(optional)Contains the starting point of a date range in standard ISO form. Value conforms to data.ISODATE.
synch(optional)Points to elements that are synchronous with the current element. One or more values from data.URI, separated by spaces.
target(optional)Identifies passive participants in a relationship; that is, the entities pointed "to". One or more values from data.URI, separated by spaces.
targettype(optional)Characterization of target resource(s) using any convenient classification scheme or typology. Value is a NMTOKEN.
type(optional)Designation which characterizes the element in some sense, using any convenient classification scheme or typology that employs single-token labels. One or more values of datatype NMTOKEN, separated by spaces.
xlink:actuate(optional)Defines whether a link occurs automatically or must be requested by the user. Allowed values are: "onLoad" (Load the target resource(s) immediately.), "onRequest" (Load the target resource(s) upon user request.), "none" (Do not permit loading of the target resource(s).), "other" (Behavior other than allowed by the other values of this attribute.)
xlink:role(optional)Characterization of the relationship between resources. The value of the role attribute must be a URI. Value conforms to data.URI.
xlink:show(optional)Defines how a remote resource is rendered. Allowed values are: "new" (Open in a new window.), "replace" (Load the referenced resource in the same window.), "embed" (Embed the referenced resource at the point of the link.), "none" (Do not permit traversal to the referenced resource.), "other" (Behavior other than permitted by the other values of this attribute.)
xml:base(optional)Provides a base URI reference with which applications can resolve relative URI references into absolute URI references. Value conforms to data.URI.
xml:id(optional)Regularizes the naming of an element and thus facilitates building links between it and other resources. Each id attribute within a document must have a unique value. Value is a valid xml:id.
Member of
model.relationLikeCollects elements that express a relationship.
Contained By
abbr, accMat, accessRestrict, acquisition, actor, add, addDesc, addName, addrLine, anchoredText, annot, arranger, attacca, audience, author, back, bibl, biblScope, bindingDesc, bloc, bracketSpan, byline, caption, captureMode, carrierForm, catchwords, collation, colophon, composer, condition, contentItem, context, contributor, corpName, corr, country, cpMark, creation, damage, date, decoDesc, decoNote, dedicatee, dedication, del, depth, desc, dim, dimensions, dir, distributor, district, dynam, edition, editor, ending, epigraph, exhibHist, expan, explicit, extent, f, famName, figDesc, fileChar, fing, foliation, foreName, front, funder, genName, genre, geogFeat, geogName, gliss, hand, harm, head, height, heraldry, identifier, imprimatur, imprint, inscription, l, label, labelAbbr, language, layout, layoutDesc, lem, li, librettist, line, lyricist, measure, metaMark, name, nameLink, num, oStaff, octave, orig, ornam, otherChar, p, perfDuration, perfRes, periodName, persName, pgFoot, pgHead, physMedium, plateNum, playingSpeed, price, provenance, pubPlace, publisher, q, quote, rdg, recipient, ref, reg, region, relationList, rend, repeatMark, repository, resp, restore, role, roleDesc, roleName, rubric, score, scoreFormat, scriptDesc, scriptNote, seal, sealDesc, secFolio, section, seg, settlement, sic, signatures, signifLet, soundChan, speaker, specRepro, sponsor, stack, staff, stageDir, stamp, street, styleName, supplied, supportDesc, syl, sysReq, td, tempo, term, textLang, th, trackConfig, treatHist, treatSched, typeDesc, typeNote, unclear, useRestrict, watermark, width
(MEI.shared) Collects elements that express a relationship.
backContains any appendixes, advertisements, indexes, etc. following the main body of a musical text.
endingAlternative ending for a repeated passage of music; i.e., prima volta, seconda volta, etc.
frontBundles prefatory text found before the start of the musical text.
measureUnit of musical time consisting of a fixed number of note values of a given type, as determined by the prevailing meter, and delimited in musical notation by bar lines.
oStaffA staff that holds an alternative passage which may be played instead of the original material.
relationListGathers relation elements.
scoreFull score view of the musical content.
sectionSegment of music data.
staffA group of equidistant horizontal lines on which notes are placed in order to represent pitch or a grouping element for individual 'strands' of notes, rests, etc. that may or may not actually be rendered on staff lines; that is, both diastematic and non-diastematic signs.
(MEI.shared) Groups textual elements that occur at the level of individual words or phrases. This class is equivalent to the model.textPhraseLike class without the pb element.
acquisitionRecords information concerning the process by which an item was acquired by the holding institution.
actorName of an actor appearing within a cast list.
anchoredTextContainer for text that is fixed to a particular page location, regardless of changes made to the layout of the measures around it.
arrangerA person or organization who transcribes a musical composition, usually for a different medium from that of the original; in an arrangement the musical substance remains essentially unchanged.
attaccaAn instruction to begin the next section or movement of a composition without pause.
authorThe name of the creator of the intellectual content of a non-musical, literary work.
biblScopeDefines the scope of a bibliographic reference, for example as a list of page numbers, or a named subdivision of a larger work.
bindingDescDescribes the present and former bindings of an item.
bracketSpanMarks a sequence of notational events grouped by a bracket.
bylineContains the primary statement of responsibility given for a work on its title page.
composerThe name of the creator of the intellectual content of a musical work.
contributorNames of individuals, institutions, or organizations responsible for contributions to the intellectual content of a work, where the specialized elements for authors, editors, etc. do not suffice or do not apply.
cpMarkA verbal or graphical indication to copy musical material written elsewhere.
creationNon-bibliographic details of the creation of an intellectual entity, in narrative form, such as the date, place, and circumstances of its composition. More detailed information may be captured within the history element.
decoDescContains a description of the decoration of an item.
decoNoteContains a description of one or more decorative features of an item.
dedicateeEntity to whom a creative work is formally offered.
dedicationContains a dedicatory statement.
depthDescription of a measurement taken through a three-dimensional object.
descContainer for text that briefly describes the feature to which it is attached, including its intended usage, purpose, or application as appropriate.
dimAny single dimensional specification.
dirAn instruction expressed as a combination of text and symbols, typically above, below, or between staves, but not on the staff — that is not encoded elsewhere in more specific elements, like tempo, dynam or repeatMark.
distributorPerson or agency, other than a publisher, from which access (including electronic access) to a bibliographic entity may be obtained.
dynamIndication of the volume of a note, phrase, or section of music.
editionA word or text phrase that indicates a difference in either content or form between the item being described and a related item previously issued by the same publisher/distributor (e.g., 2nd edition, version 2.0, etc.), or simultaneously issued by either the same publisher/distributor or another publisher/distributor (e.g., large print edition, British edition, etc.).
editorThe name of the individual(s), institution(s) or organization(s) acting in an editorial capacity.
exhibHistA record of public exhibitions, including dates, venues, etc.
extentUsed to express size in terms other than physical dimensions, such as number of pages, records, bytes, physical components, etc.
fSingle element of a figured bass indication.
figDescContains a brief prose description of the appearance or content of a graphic figure, for use when documenting an image without displaying it.
fingAn individual finger in a fingering indication.
funderNames of individuals, institutions, or organizations responsible for funding. Funders provide financial support for a project; they are distinct from sponsors, who provide intellectual support and authority.
genreTerm or terms that designate a category characterizing a particular style, form, or content.
glissA continuous or sliding movement from one pitch to another, usually indicated by a straight or wavy line.
handDefines a distinct scribe or handwriting style.
harmAn indication of harmony, e.g., chord names, tablature grids, harmonic analysis, figured bass.
heightDescription of the vertical size of an object.
labelA container for document text that identifies the feature to which it is attached. For a "tool tip" or other generated label, use the label attribute.
labelAbbrA label on the pages following the first.
languageDescription of a language used in the document.
layoutDescCollects layout descriptions.
librettistPerson or organization who is a writer of the text of an opera, oratorio, etc.
lineA visual line that cannot be represented by a more specific; i.e., semantic, element.
lyricistPerson or organization who is a writer of the text of a song.
metaMarkA graphical or textual statement with additional / explanatory information about the musical text. The textual consequences of this intervention are encoded independently via other means; that is, with elements such as add, del, etc.
octaveAn indication that a passage should be performed one or more octaves above or below its written pitch.
ornamAn element indicating an ornament that is not a mordent, turn, or trill.
perfResName of an instrument on which a performer plays, a performer's voice range, or a standard performing ensemble designation.
pgFootA running footer.
pgHeadA running header.
priceThe cost of access to a bibliographic item.
provenanceThe record of ownership or custodianship of an item.
pubPlaceName of the place where a bibliographic item was published.
publisherName of the organization responsible for the publication of a bibliographic item.
recipientThe name of the individual(s), institution(s) or organization(s) receiving correspondence.
repeatMark An instruction expressed as a combination of text and symbols – segno and coda – typically above, below, or between staves, but not on the staff.
repositoryInstitution, agency, or individual which holds a bibliographic item.
respA phrase describing the nature of intellectual responsibility.
roleName of a dramatic role, as given in a cast list.
roleDescDescribes a character’s role in a drama.
scriptDescContains a description of the letters or characters used in an autographic item.
sealA single seal or similar attachment.
sealDescDescribes the seals or similar external attachments applied to an item.
signifLetSignificantive letter(s).
soundChanReflects the number of apparent sound channels in the playback of a recording (monaural, stereophonic, quadraphonic, etc.).
speakerContains a specialized form of heading or label, giving the name of one or more speakers in a dramatic text or fragment.
sponsorNames of sponsoring individuals, organizations or institutions. Sponsors give their intellectual authority to a project; they are to be distinguished from funders, who provide the funding but do not necessarily take intellectual responsibility.
stackAn inline table with a single column.
stageDirContains any kind of stage direction within a dramatic text or fragment.
supportDescGroups elements describing the physical support material of an item.
sylIndividual lyric syllable.
tempoText and symbols descriptive of tempo, mood, or style, e.g., "allarg.", "a tempo", "cantabile", "Moderato", "♩=60", "Moderato ♩ =60").
termKeyword or phrase which describes a resource.
textLangIdentifies the languages and writing systems within the work described by a bibliographic description, not the language of the description.
treatHistA record of the treatment the item has undergone (e.g., de-acidification, restoration, etc.).
treatSchedScheduled treatment, e.g., de-acidification, restoration, etc., for an item.
typeDescContains a description of the typefaces or other aspects of the printing of a printed source.
widthDescription of the horizontal size of an object.
(MEI.critapp) Groups elements that may appear as part of a textual variant.
(MEI.critapp) Groups elements that may appear as part of a textual or musical variant.
lemContains the lemma, or base text, of a textual variation.
rdgContains a single reading within a textual variation.
(MEI.edittrans) Groups elements that may appear as part of editorial and transcription elements in prose.
(MEI.edittrans) Groups elements that may appear as part of editorial and transcription elements.
abbrA generic element for 1) a shortened form of a word, including an acronym or 2) a shorthand notation.
addMarks an addition to the text.
corrContains the correct form of an apparent erroneous passage.
damageContains an area of damage to the physical medium.
delContains information deleted, marked as deleted, or otherwise indicated as superfluous or spurious in the copy text by an author, scribe, annotator, or corrector.
expanContains the expansion of an abbreviation.
origContains material which is marked as following the original, rather than being normalized or corrected.
regContains material which has been regularized or normalized in some sense.
restoreIndicates restoration of material to an earlier state by cancellation of an editorial or authorial marking or instruction.
sicContains apparently incorrect or inaccurate material.
suppliedContains material supplied by the transcriber or editor for any reason.
unclearContains material that cannot be transcribed with certainty because it is illegible or inaudible in the source.
(MEI.shared) Groups textual elements that occur at the level of individual words or phrases.
addNameContains an additional name component, such as a nickname, epithet, or alias, or any other descriptive phrase used within a personal name.
addrLineSingle line of a postal address.
annotProvides a statement explaining the text or indicating the basis for an assertion.
biblProvides a loosely-structured bibliographic citation in which the sub-components may or may not be explicitly marked.
blocContains the name of a geopolitical unit consisting of two or more nation states or countries.
captionA label which accompanies an illustration or a table.
contentItemContains a single entry within a content description element.
corpNameIdentifies an organization or group of people that acts as a single entity.
countryContains the name of a geopolitical unit, such as a nation, country, colony, or commonwealth, larger than or administratively superior to a region and smaller than a bloc.
dateA string identifying a point in time or the time period between two such points.
districtContains the name of any kind of subdivision of a settlement, such as a parish, ward, or other administrative or geographic unit.
famNameContains a family (inherited) name, as opposed to a given, baptismal, or nick name.
foreNameContains a forename, given or baptismal name.
genNameContains a name component used to distinguish otherwise similar names on the basis of the relative ages or generations of the persons named.
geogFeatContains a common noun identifying a geographical feature.
geogNameThe proper noun designation for a place, natural feature, or political jurisdiction.
headContains any heading, for example, the title of a section of text, or the heading of a list.
identifierAn alpha-numeric string that establishes the identity of the described material.
imprintInformation relating to the publication or distribution of a bibliographic item.
lContains a single line of text within a line group.
liSingle item in a list.
nameProper noun or noun phrase.
nameLinkContains a connecting phrase or link used within a name but not regarded as part of it, such as "van der" or "of", "from", etc.
numNumeric information in any form.
periodNameA label that describes a period of time, such as 'Baroque' or '3rd Style period'.
persNameDesignation for an individual, including any or all of that individual's forenames, surnames, honorific titles, and added names.
qContains material which is distinguished from the surrounding phrase-level text using quotation marks or a similar method. Use quote for block-level quotations.
refDefines a traversible reference to another location. May contain text and sub-elements that describe the destination.
regionContains the name of an administrative unit such as a state, province, or county, larger than a settlement, but smaller than a country.
rendA formatting element indicating special visual rendering, e.g., bold or italicized, of a text word or phrase.
roleNameContains a name component which indicates that the referent has a particular role or position in society, such as an official title or rank.
segrepresents any segmentation of text below the "text component" level.
settlementContains the name of a settlement such as a city, town, or village identified as a single geopolitical or administrative unit.
streetfull street address including any name or number identifying a building as well as the name of the street or route on which it is located.
styleNameA label for a characteristic style of writing or performance, such as 'bebop' or 'rock-n-roll'.
tdDesignates a table cell that contains data as opposed to a cell that contains column or row heading information.
thDesignates a table cell containing column or row heading information as opposed to one containing data.
(MEI.shared) Groups elements which may appear as part of the paragraph content model. A paragraph may contain inline elements and all other block-level elements except itself.
epigraphContains a quotation, anonymous or attributed, appearing on a title page.
imprimaturContains a formal statement authorizing the publication of a work, sometimes required to appear on a title page or its verso.
pOne or more text phrases that form a logical prose passage.
quoteContains a paragraph-like block of text attributed to an external source, normally set off from the surrounding text by spacing or other typographic distinction.
(MEI.shared) Provides a choice between structured and unstructured/mixed content.
accMatHolds a description of any additional material bound with an item, such as non-contemporaneous documents or fragments.
accessRestrictDescribes the conditions that affect the accessibility of material.
addDescProvides a description of significant additions found within an item, such as marginalia or other annotations.
audienceDefines the class of user for which the work is intended, as defined by age group (e.g., children, young adults, adults, etc.), educational level (e.g., primary, secondary, etc.), or other categorization.
captureModeThe means used to record notation, sound, or images in the production of a source/manifestation (e.g., analogue, acoustic, electric, digital, optical etc.).
carrierFormThe specific class of material to which the physical carrier of the source/manifestation belongs (e.g., sound cassette, videodisc, microfilm cartridge, transparency, etc.). The carrier for a manifestation comprising multiple physical components may include more than one form (e.g., a filmstrip with an accompanying booklet, a separate sound disc carrying the sound track for a film, etc.).
catchwordsDescribes the system used to ensure correct ordering of the quires making up an item, typically by means of annotations at the foot of the page.
collationRecords a description of how the leaves or bifolia of an item are physically arranged.
colophonContains a statement providing information regarding the date, place, agency, or reason for production of the item.
conditionThe physical condition of an item, particularly any variances between the physical make-up of the item and that of other copies of the same item (e.g., missing pages or plates, brittleness, faded images, etc.).
contextThe historical, social, intellectual, artistic, or other context within which the work was originally conceived (e.g., the 17th century restoration of the monarchy in England, the aesthetic movement of the late 19th century, etc.) or the historical, social, intellectual, artistic, or other context within which the expression was realized.
dimensionsInformation about the physical size of an entity; usually includes numerical data.
explicitContains the explicit of a manuscript item; that is, the closing words of the text proper, exclusive of any rubric or colophon which might follow it.
fileCharStandards or schemes used to encode the file (e.g., ASCII, SGML, etc.), physical characteristics of the file (e.g., recording density, parity, blocking, etc.), and other characteristics that have a bearing on how the file can be processed.
foliationDescribes the numbering system or systems used to count the leaves or pages in a codex.
heraldryContains a heraldic formula or phrase, typically found as part of a blazon, coat of arms, etc.
inscriptionAn inscription added to an item, such as a bookplate, a note designating the item as a gift, and/or the author’s signature.
layoutDescribes how text is laid out on the page, including information about any ruling, pricking, or other evidence of page-preparation techniques.
otherCharAny characteristic that serves to differentiate a work or expression from another.
perfDurationUsed to express the duration of performance of printed or manuscript music or the playing time for a sound recording, videorecording, etc.
physMediumRecords the physical materials used in the source, such as ink and paper.
plateNumDesignation assigned to a resource by a music publisher, usually printed at the bottom of each page, and sometimes appearing also on the title page.
playingSpeedPlaying speed for a sound recording is the speed at which the carrier must be operated to produce the sound intended (e.g., 33 1/3 rpm, 19 cm/s, etc.).
rubricContains a string of words through which a manuscript signals the beginning or end of a text division, often with an assertion as to its author and title, which is in some way set off from the text itself, usually in red ink, or by use of different size or type of script, or some other such visual device.
scoreFormatDescribes the type of score used to represent a musical composition (e.g., short score, full score, condensed score, close score, etc.).
scriptNoteDescribes a particular script distinguished within the description of an autographic item.
secFolioMarks the word or words taken from a fixed point in a codex (typically the beginning of the second leaf) in order to provide a unique identifier for the item.
signaturesProvides a description of the leaf or quire signatures found within a codex.
specReproThe equalization system, noise reduction system, etc. used in making the recording (e.g., NAB, DBX, Dolby, etc.).
stampContains a word or phrase describing an official mark indicating ownership, genuineness, validity, etc.
sysReqSystem requirements for using the electronic item.
trackConfigNumber of physical/input tracks on a sound medium (e.g., eight track, twelve track).
typeNoteDescribes a particular font or other significant typographic feature of a printed resource.
useRestrictContainer for information about the conditions that affect use of a bibliographic item after access has been granted.
watermarkContains a description of a watermark or similar device.
Common Music Notation (CMN) repertoire component declarations.
attaccaAn instruction to begin the next section or movement of a composition without pause.
bracketSpanMarks a sequence of notational events grouped by a bracket.
glissA continuous or sliding movement from one pitch to another, usually indicated by a straight or wavy line.
measureUnit of musical time consisting of a fixed number of note values of a given type, as determined by the prevailing meter, and delimited in musical notation by bar lines.
oStaffA staff that holds an alternative passage which may be played instead of the original material.
octaveAn indication that a passage should be performed one or more octaves above or below its written pitch.
repeatMark An instruction expressed as a combination of text and symbols – segno and coda – typically above, below, or between staves, but not on the staff.
Critical apparatus component declarations.
lemContains the lemma, or base text, of a textual variation.
rdgContains a single reading within a textual variation.
Dramatic text component declarations.
stageDirContains any kind of stage direction within a dramatic text or fragment.
Editorial and transcriptional component declarations.
abbrA generic element for 1) a shortened form of a word, including an acronym or 2) a shorthand notation.
addMarks an addition to the text.
corrContains the correct form of an apparent erroneous passage.
cpMarkA verbal or graphical indication to copy musical material written elsewhere.
damageContains an area of damage to the physical medium.
delContains information deleted, marked as deleted, or otherwise indicated as superfluous or spurious in the copy text by an author, scribe, annotator, or corrector.
expanContains the expansion of an abbreviation.
metaMarkA graphical or textual statement with additional / explanatory information about the musical text. The textual consequences of this intervention are encoded independently via other means; that is, with elements such as add, del, etc.
origContains material which is marked as following the original, rather than being normalized or corrected.
regContains material which has been regularized or normalized in some sense.
restoreIndicates restoration of material to an earlier state by cancellation of an editorial or authorial marking or instruction.
sicContains apparently incorrect or inaccurate material.
suppliedContains material supplied by the transcriber or editor for any reason.
unclearContains material that cannot be transcribed with certainty because it is illegible or inaudible in the source.
Figures and tables component declarations.
figDescContains a brief prose description of the appearance or content of a graphic figure, for use when documenting an image without displaying it.
tdDesignates a table cell that contains data as opposed to a cell that contains column or row heading information.
thDesignates a table cell containing column or row heading information as opposed to one containing data.
Fingering component declarations.
fingAn individual finger in a fingering indication.
Harmony component declarations.
fSingle element of a figured bass indication.
harmAn indication of harmony, e.g., chord names, tablature grids, harmonic analysis, figured bass.
Metadata header component declarations.
accessRestrictDescribes the conditions that affect the accessibility of material.
acquisitionRecords information concerning the process by which an item was acquired by the holding institution.
audienceDefines the class of user for which the work is intended, as defined by age group (e.g., children, young adults, adults, etc.), educational level (e.g., primary, secondary, etc.), or other categorization.
bylineContains the primary statement of responsibility given for a work on its title page.
captureModeThe means used to record notation, sound, or images in the production of a source/manifestation (e.g., analogue, acoustic, electric, digital, optical etc.).
carrierFormThe specific class of material to which the physical carrier of the source/manifestation belongs (e.g., sound cassette, videodisc, microfilm cartridge, transparency, etc.). The carrier for a manifestation comprising multiple physical components may include more than one form (e.g., a filmstrip with an accompanying booklet, a separate sound disc carrying the sound track for a film, etc.).
conditionThe physical condition of an item, particularly any variances between the physical make-up of the item and that of other copies of the same item (e.g., missing pages or plates, brittleness, faded images, etc.).
contentItemContains a single entry within a content description element.
contextThe historical, social, intellectual, artistic, or other context within which the work was originally conceived (e.g., the 17th century restoration of the monarchy in England, the aesthetic movement of the late 19th century, etc.) or the historical, social, intellectual, artistic, or other context within which the expression was realized.
dedicationContains a dedicatory statement.
exhibHistA record of public exhibitions, including dates, venues, etc.
fileCharStandards or schemes used to encode the file (e.g., ASCII, SGML, etc.), physical characteristics of the file (e.g., recording density, parity, blocking, etc.), and other characteristics that have a bearing on how the file can be processed.
handDefines a distinct scribe or handwriting style.
inscriptionAn inscription added to an item, such as a bookplate, a note designating the item as a gift, and/or the author’s signature.
languageDescription of a language used in the document.
otherCharAny characteristic that serves to differentiate a work or expression from another.
perfDurationUsed to express the duration of performance of printed or manuscript music or the playing time for a sound recording, videorecording, etc.
perfResName of an instrument on which a performer plays, a performer's voice range, or a standard performing ensemble designation.
physMediumRecords the physical materials used in the source, such as ink and paper.
plateNumDesignation assigned to a resource by a music publisher, usually printed at the bottom of each page, and sometimes appearing also on the title page.
playingSpeedPlaying speed for a sound recording is the speed at which the carrier must be operated to produce the sound intended (e.g., 33 1/3 rpm, 19 cm/s, etc.).
priceThe cost of access to a bibliographic item.
provenanceThe record of ownership or custodianship of an item.
scoreFormatDescribes the type of score used to represent a musical composition (e.g., short score, full score, condensed score, close score, etc.).
soundChanReflects the number of apparent sound channels in the playback of a recording (monaural, stereophonic, quadraphonic, etc.).
specReproThe equalization system, noise reduction system, etc. used in making the recording (e.g., NAB, DBX, Dolby, etc.).
sysReqSystem requirements for using the electronic item.
trackConfigNumber of physical/input tracks on a sound medium (e.g., eight track, twelve track).
treatHistA record of the treatment the item has undergone (e.g., de-acidification, restoration, etc.).
treatSchedScheduled treatment, e.g., de-acidification, restoration, etc., for an item.
useRestrictContainer for information about the conditions that affect use of a bibliographic item after access has been granted.
watermarkContains a description of a watermark or similar device.
Manuscript description component declarations.
accMatHolds a description of any additional material bound with an item, such as non-contemporaneous documents or fragments.
addDescProvides a description of significant additions found within an item, such as marginalia or other annotations.
bindingDescDescribes the present and former bindings of an item.
catchwordsDescribes the system used to ensure correct ordering of the quires making up an item, typically by means of annotations at the foot of the page.
collationRecords a description of how the leaves or bifolia of an item are physically arranged.
colophonContains a statement providing information regarding the date, place, agency, or reason for production of the item.
decoDescContains a description of the decoration of an item.
decoNoteContains a description of one or more decorative features of an item.
explicitContains the explicit of a manuscript item; that is, the closing words of the text proper, exclusive of any rubric or colophon which might follow it.
foliationDescribes the numbering system or systems used to count the leaves or pages in a codex.
heraldryContains a heraldic formula or phrase, typically found as part of a blazon, coat of arms, etc.
layoutDescribes how text is laid out on the page, including information about any ruling, pricking, or other evidence of page-preparation techniques.
layoutDescCollects layout descriptions.
rubricContains a string of words through which a manuscript signals the beginning or end of a text division, often with an assertion as to its author and title, which is in some way set off from the text itself, usually in red ink, or by use of different size or type of script, or some other such visual device.
scriptDescContains a description of the letters or characters used in an autographic item.
scriptNoteDescribes a particular script distinguished within the description of an autographic item.
sealA single seal or similar attachment.
sealDescDescribes the seals or similar external attachments applied to an item.
secFolioMarks the word or words taken from a fixed point in a codex (typically the beginning of the second leaf) in order to provide a unique identifier for the item.
signaturesProvides a description of the leaf or quire signatures found within a codex.
stampContains a word or phrase describing an official mark indicating ownership, genuineness, validity, etc.
supportDescGroups elements describing the physical support material of an item.
typeDescContains a description of the typefaces or other aspects of the printing of a printed source.
typeNoteDescribes a particular font or other significant typographic feature of a printed resource.
Names and dates component declarations.
addNameContains an additional name component, such as a nickname, epithet, or alias, or any other descriptive phrase used within a personal name.
blocContains the name of a geopolitical unit consisting of two or more nation states or countries.
corpNameIdentifies an organization or group of people that acts as a single entity.
countryContains the name of a geopolitical unit, such as a nation, country, colony, or commonwealth, larger than or administratively superior to a region and smaller than a bloc.
districtContains the name of any kind of subdivision of a settlement, such as a parish, ward, or other administrative or geographic unit.
famNameContains a family (inherited) name, as opposed to a given, baptismal, or nick name.
foreNameContains a forename, given or baptismal name.
genNameContains a name component used to distinguish otherwise similar names on the basis of the relative ages or generations of the persons named.
geogFeatContains a common noun identifying a geographical feature.
geogNameThe proper noun designation for a place, natural feature, or political jurisdiction.
nameLinkContains a connecting phrase or link used within a name but not regarded as part of it, such as "van der" or "of", "from", etc.
periodNameA label that describes a period of time, such as 'Baroque' or '3rd Style period'.
persNameDesignation for an individual, including any or all of that individual's forenames, surnames, honorific titles, and added names.
regionContains the name of an administrative unit such as a state, province, or county, larger than a settlement, but smaller than a country.
roleNameContains a name component which indicates that the referent has a particular role or position in society, such as an official title or rank.
settlementContains the name of a settlement such as a city, town, or village identified as a single geopolitical or administrative unit.
streetfull street address including any name or number identifying a building as well as the name of the street or route on which it is located.
styleNameA label for a characteristic style of writing or performance, such as 'bebop' or 'rock-n-roll'.
Neume repertoire component declarations.
signifLetSignificantive letter(s).
Pointer and reference component declarations.
refDefines a traversible reference to another location. May contain text and sub-elements that describe the destination.
Component declarations that are shared between two or more modules.
actorName of an actor appearing within a cast list.
addrLineSingle line of a postal address.
annotProvides a statement explaining the text or indicating the basis for an assertion.
arrangerA person or organization who transcribes a musical composition, usually for a different medium from that of the original; in an arrangement the musical substance remains essentially unchanged.
authorThe name of the creator of the intellectual content of a non-musical, literary work.
biblProvides a loosely-structured bibliographic citation in which the sub-components may or may not be explicitly marked.
biblScopeDefines the scope of a bibliographic reference, for example as a list of page numbers, or a named subdivision of a larger work.
captionA label which accompanies an illustration or a table.
composerThe name of the creator of the intellectual content of a musical work.
contributorNames of individuals, institutions, or organizations responsible for contributions to the intellectual content of a work, where the specialized elements for authors, editors, etc. do not suffice or do not apply.
creationNon-bibliographic details of the creation of an intellectual entity, in narrative form, such as the date, place, and circumstances of its composition. More detailed information may be captured within the history element.
dateA string identifying a point in time or the time period between two such points.
dedicateeEntity to whom a creative work is formally offered.
depthDescription of a measurement taken through a three-dimensional object.
descContainer for text that briefly describes the feature to which it is attached, including its intended usage, purpose, or application as appropriate.
dimAny single dimensional specification.
dimensionsInformation about the physical size of an entity; usually includes numerical data.
dirAn instruction expressed as a combination of text and symbols, typically above, below, or between staves, but not on the staff — that is not encoded elsewhere in more specific elements, like tempo, dynam or repeatMark.
distributorPerson or agency, other than a publisher, from which access (including electronic access) to a bibliographic entity may be obtained.
dynamIndication of the volume of a note, phrase, or section of music.
editionA word or text phrase that indicates a difference in either content or form between the item being described and a related item previously issued by the same publisher/distributor (e.g., 2nd edition, version 2.0, etc.), or simultaneously issued by either the same publisher/distributor or another publisher/distributor (e.g., large print edition, British edition, etc.).
editorThe name of the individual(s), institution(s) or organization(s) acting in an editorial capacity.
endingAlternative ending for a repeated passage of music; i.e., prima volta, seconda volta, etc.
extentUsed to express size in terms other than physical dimensions, such as number of pages, records, bytes, physical components, etc.
funderNames of individuals, institutions, or organizations responsible for funding. Funders provide financial support for a project; they are distinct from sponsors, who provide intellectual support and authority.
genreTerm or terms that designate a category characterizing a particular style, form, or content.
headContains any heading, for example, the title of a section of text, or the heading of a list.
heightDescription of the vertical size of an object.
identifierAn alpha-numeric string that establishes the identity of the described material.
imprintInformation relating to the publication or distribution of a bibliographic item.
labelA container for document text that identifies the feature to which it is attached. For a "tool tip" or other generated label, use the label attribute.
labelAbbrA label on the pages following the first.
librettistPerson or organization who is a writer of the text of an opera, oratorio, etc.
lyricistPerson or organization who is a writer of the text of a song.
nameProper noun or noun phrase.
numNumeric information in any form.
ornamAn element indicating an ornament that is not a mordent, turn, or trill.
pOne or more text phrases that form a logical prose passage.
pgFootA running footer.
pgHeadA running header.
pubPlaceName of the place where a bibliographic item was published.
publisherName of the organization responsible for the publication of a bibliographic item.
recipientThe name of the individual(s), institution(s) or organization(s) receiving correspondence.
relationListGathers relation elements.
rendA formatting element indicating special visual rendering, e.g., bold or italicized, of a text word or phrase.
repositoryInstitution, agency, or individual which holds a bibliographic item.
respA phrase describing the nature of intellectual responsibility.
roleName of a dramatic role, as given in a cast list.
roleDescDescribes a character’s role in a drama.
scoreFull score view of the musical content.
sectionSegment of music data.
speakerContains a specialized form of heading or label, giving the name of one or more speakers in a dramatic text or fragment.
sponsorNames of sponsoring individuals, organizations or institutions. Sponsors give their intellectual authority to a project; they are to be distinguished from funders, who provide the funding but do not necessarily take intellectual responsibility.
stackAn inline table with a single column.
staffA group of equidistant horizontal lines on which notes are placed in order to represent pitch or a grouping element for individual 'strands' of notes, rests, etc. that may or may not actually be rendered on staff lines; that is, both diastematic and non-diastematic signs.
sylIndividual lyric syllable.
tempoText and symbols descriptive of tempo, mood, or style, e.g., "allarg.", "a tempo", "cantabile", "Moderato", "♩=60", "Moderato ♩ =60").
termKeyword or phrase which describes a resource.
textLangIdentifies the languages and writing systems within the work described by a bibliographic description, not the language of the description.
widthDescription of the horizontal size of an object.
Text component declarations.
backContains any appendixes, advertisements, indexes, etc. following the main body of a musical text.
epigraphContains a quotation, anonymous or attributed, appearing on a title page.
frontBundles prefatory text found before the start of the musical text.
imprimaturContains a formal statement authorizing the publication of a work, sometimes required to appear on a title page or its verso.
lContains a single line of text within a line group.
liSingle item in a list.
qContains material which is distinguished from the surrounding phrase-level text using quotation marks or a similar method. Use quote for block-level quotations.
quoteContains a paragraph-like block of text attributed to an external source, normally set off from the surrounding text by spacing or other typographic distinction.
segrepresents any segmentation of text below the "text component" level.
User-defined symbols component declarations.
anchoredTextContainer for text that is fixed to a particular page location, regardless of changes made to the layout of the measures around it.
lineA visual line that cannot be represented by a more specific; i.e., semantic, element.
May Contain
(<relation> may not have child elements)
Remarks

The plist and target attributes identify the participants in a relationship, while the rel attribute describes the nature of their relationship. A mutual relationship can be described using only the plist attribute – the target attribute is not necessary. In a non-mutual relationship, plist identifies the entities pointed "from", while target specifies the entities pointed "to". If the target attribute is present, but the plist is not, the relationship is presumed to exist between the parent of the current relation element and the entities identified by target.

Constraints

Within work, expression, source, or item, the value of the rel attribute must match one of the following: hasAbridgement, isAbridgementOf, hasAdaptation, isAdaptationOf, hasAlternate, isAlternateOf, hasArrangement, isArrangementOf, hasComplement, isComplementOf, hasEmbodiment, isEmbodimentOf, hasExemplar, isExemplarOf, hasImitation, isImitationOf, hasPart, isPartOf, hasRealization, isRealizationOf, hasReconfiguration, isReconfigurationOf, hasReproduction, isReproductionOf, hasRevision, isRevisionOf, hasSuccessor, isSuccessorOf, hasSummarization, isSummarizationOf, hasSupplement, isSupplementOf, hasTransformation, isTransformationOf, hasTranslation, isTranslationOf
Within work, expression, source or item, the target attribute must be present.

Declaration
<elementSpec ident="relation" module="MEI.shared">
<desc xml:lang="en">Describes a relationship or linkage amongst entities.</desc>
<classes>
<memberOf key="att.common"/>
<memberOf key="att.authorized"/>
<memberOf key="att.bibl"/>
<memberOf key="att.datable"/>
<memberOf key="att.evidence"/>
<memberOf key="att.plist"/>
<memberOf key="att.pointing"/>
<memberOf key="att.targetEval"/>
<memberOf key="model.relationLike"/>
</classes>
<content>
<empty/>
</content>
<constraintSpec ident="FRBR_relation" scheme="schematron">
<constraint>
<!-- See http://vocab.org/frbr/core for more-precise entity-to-entity constraints -->
<sch:rule context="mei:relationList/mei:relation[parent::mei:work or parent::mei:expression or parent::mei:source or parent::mei:item]">
<sch:assert test="matches(@rel, 'hasAbridgement') or matches(@rel, 'hasAbridgement') or matches(@rel, 'isAbridgementOf') or matches(@rel, 'hasAdaptation') or matches(@rel, 'isAdaptationOf') or matches(@rel, 'hasAlternate') or matches(@rel, 'isAlternateOf') or matches(@rel, 'hasArrangement') or matches(@rel, 'isArrangementOf') or matches(@rel, 'hasComplement') or matches(@rel, 'isComplementOf') or matches(@rel, 'hasEmbodiment') or matches(@rel, 'isEmbodimentOf') or matches(@rel, 'hasExemplar') or matches(@rel, 'isExemplarOf') or matches(@rel, 'hasImitation') or matches(@rel, 'isImitationOf') or matches(@rel, 'hasPart') or matches(@rel, 'isPartOf') or matches(@rel, 'hasRealization') or matches(@rel, 'isRealizationOf') or matches(@rel, 'hasReconfiguration') or matches(@rel, 'isReconfigurationOf') or matches(@rel, 'hasReproduction') or matches(@rel, 'isReproductionOf') or matches(@rel, 'hasRevision') or matches(@rel, 'isRevisionOf') or matches(@rel, 'hasSuccessor') or matches(@rel, 'isSuccessorOf') or matches(@rel, 'hasSummarization') or matches(@rel, 'isSummarizationOf') or matches(@rel, 'hasSupplement') or matches(@rel, 'isSupplementOf') or matches(@rel, 'hasTransformation') or matches(@rel, 'isTransformationOf') or matches(@rel, 'hasTranslation') or matches(@rel, 'isTranslationOf')">Within work, expression, source, or item, the value of the rel attribute must match one of the following: hasAbridgement, isAbridgementOf, hasAdaptation, isAdaptationOf, hasAlternate, isAlternateOf, hasArrangement, isArrangementOf, hasComplement, isComplementOf, hasEmbodiment, isEmbodimentOf, hasExemplar, isExemplarOf, hasImitation, isImitationOf, hasPart, isPartOf, hasRealization, isRealizationOf, hasReconfiguration, isReconfigurationOf, hasReproduction, isReproductionOf, hasRevision, isRevisionOf, hasSuccessor, isSuccessorOf, hasSummarization, isSummarizationOf, hasSupplement, isSupplementOf, hasTransformation, isTransformationOf, hasTranslation, isTranslationOf</sch:assert>
<sch:assert test="@target">Within work, expression, source or item, the target attribute must be present.</sch:assert>
</sch:rule>
</constraint>
</constraintSpec>
<attList>
<attDef ident="rel" usage="req">
<desc xml:lang="en">Describes the relationship between the entities identified by the plist and target attributes.</desc>
<datatype>
<rng:ref name="data.RELATIONSHIP"/>
</datatype>
</attDef>
</attList>
<remarks xml:lang="en">
<p>The <att>plist</att> and <att>target</att> attributes identify the participants in a relationship, while the <att>rel</att> attribute describes the nature of their relationship. A mutual relationship can be described using only the <att>plist</att> attribute – the <att>target</att> attribute is not necessary. In a non-mutual relationship, <att>plist</att> identifies the entities pointed "from", while <att>target</att> specifies the entities pointed "to". If the <att>target</att> attribute is present, but the <att>plist</att> is not, the relationship is presumed to exist between the parent of the current relation element and the entities identified by <att>target</att>.</p>
</remarks>
</elementSpec>