<proport>

(proportion) – Description of note duration as arithmetic ratio.
5.3 Proportions
Module
MEI.mensural
Attributes
altsym, class, color, copyof, corresp, facs, follows, fontfam, fontname, fontsize, fontstyle, fontweight, glyph.auth, glyph.name, glyph.num, glyph.uri, label, letterspacing, lineheight, loc, n, next, num, numbase, precedes, prev, resp, sameas, synch, type, xml:base, xml:id
altsym(optional)Provides a way of pointing to a user-defined symbol. It must contain a reference to an ID of a symbolDef element elsewhere in the document. Value conforms to data.URI.
<proport>att.proport.visatt.altSym@altsym
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.
<proport>att.commonatt.typedatt.classed@class
color(optional)Used to indicate visual appearance. Do not confuse this with the musical term 'color' as used in pre-CMN notation. Value conforms to data.COLOR.
<proport>att.proport.visatt.color@color
copyof(optional)Points to an element of which the current element is a copy. Value conforms to data.URI.
<proport>att.commonatt.linking@copyof
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.
<proport>att.commonatt.linking@corresp
facs(optional)Points to one or more images, portions of an image, or surfaces which correspond to the current element. One or more values from data.URI, separated by spaces.
<proport>att.facsimile@facs
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.
<proport>att.commonatt.linking@follows
fontfam(optional)Contains the name of a font-family. Value conforms to data.FONTFAMILY.
<proport>att.proport.visatt.typography@fontfam
fontname(optional)Holds the name of a font. Value conforms to data.FONTNAME.
<proport>att.proport.visatt.typography@fontname
fontsize(optional)Indicates the size of a font expressed in printers' points, i.e., 1/72nd of an inch, relative terms, e.g., small, larger, etc., or percentage values relative to normal size, e.g., 125%. Value conforms to data.FONTSIZE.
<proport>att.proport.visatt.typography@fontsize
fontstyle(optional)Records the style of a font, i.e., italic, oblique, or normal. Value conforms to data.FONTSTYLE.
<proport>att.proport.visatt.typography@fontstyle
fontweight(optional)Used to indicate bold type. Value conforms to data.FONTWEIGHT.
<proport>att.proport.visatt.typography@fontweight
glyph.auth(optional)A name or label associated with the controlled vocabulary from which the value of glyph.name or glyph.num is taken, or the textual content of the element. Allowed values are: "smufl" (Standard Music Font Layout.)
<proport>att.proport.visatt.extSymatt.extSym.auth@glyph.auth
glyph.name(optional)Glyph name. Value is plain text.
<proport>att.proport.visatt.extSymatt.extSym.names@glyph.name
glyph.num(optional)Numeric glyph reference in hexadecimal notation, e.g., "#xE000" or "U+E000". N.B. SMuFL version 1.18 uses the range U+E000 - U+ECBF. Value conforms to data.HEXNUM.
<proport>att.proport.visatt.extSymatt.extSym.names@glyph.num
glyph.uri(optional)The web-accessible location of the controlled vocabulary from which the value of glyph.name or glyph.num is taken, or the textual content of the element. Value conforms to data.URI.
<proport>att.proport.visatt.extSymatt.extSym.auth@glyph.uri
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.
<proport>att.commonatt.labelled@label
letterspacing(optional)Indicates letter spacing (aka tracking) in analogy to the CSS letter-spacing property. Value conforms to data.MEASUREMENTTYPOGRAPHYSIGNED.
<proport>att.proport.visatt.typography@letterspacing
lineheight(optional)Indicates line height in analogy to the CSS line-height property. Value conforms to either data.MEASUREMENTTYPOGRAPHYUNSIGNED or data.PERCENT.
<proport>att.proport.visatt.typography@lineheight
loc(optional)Holds the staff location of the feature. Value conforms to data.STAFFLOC.
<proport>att.proport.visatt.staffLoc@loc
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.
<proport>att.commonatt.nNumberLike@n
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.
<proport>att.commonatt.linking@next
num(optional)Along with numbase, describes duration as a ratio. num is the first value in the ratio, while numbase is the second. Value is a positive integer.
<proport>att.proport.logatt.duration.ratio@num
numbase(optional)Along with num, describes duration as a ratio. num is the first value in the ratio, while numbase is the second. Value is a positive integer.
<proport>att.proport.logatt.duration.ratio@numbase
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.
<proport>att.commonatt.linking@precedes
prev(optional)Points to the previous event(s) in a user-defined collection. One or more values from data.URI, separated by spaces.
<proport>att.commonatt.linking@prev
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.
<proport>att.commonatt.responsibility@resp
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.
<proport>att.commonatt.linking@sameas
synch(optional)Points to elements that are synchronous with the current element. One or more values from data.URI, separated by spaces.
<proport>att.commonatt.linking@synch
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.
<proport>att.commonatt.typed@type
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.
<proport>att.commonatt.basic@xml:base
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.
<proport>att.commonatt.basicatt.id@xml:id
(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.facsimile) Attributes that associate a feature corresponding with all or part of an image.
facs(optional)Points to one or more images, portions of an image, or surfaces which correspond to the current element. One or more values from data.URI, separated by spaces.
(MEI.mensural) Logical domain attributes. These attributes describe augmentation or diminution of the normal value of the notes in mensural notation as a ratio.
(MEI.shared) Attributes that describe duration as a ratio.
num(optional)Along with numbase, describes duration as a ratio. num is the first value in the ratio, while numbase is the second. Value is a positive integer.
numbase(optional)Along with num, describes duration as a ratio. num is the first value in the ratio, while numbase is the second. Value is a positive integer.
(MEI.visual) Visual domain attributes.
(MEI.usersymbols) Attributes supplying pointers to user-defined symbols.
altsym(optional)Provides a way of pointing to a user-defined symbol. It must contain a reference to an ID of a symbolDef element elsewhere in the document. Value conforms to data.URI.
(MEI.shared) Visual color attributes.
color(optional)Used to indicate visual appearance. Do not confuse this with the musical term 'color' as used in pre-CMN notation. Value conforms to data.COLOR.
(MEI.externalsymbols) Attributes used to associate MEI features with corresponding glyphs in an externally-defined standard such as SMuFL.
(MEI.externalsymbols) Attributes that point to an external symbol authority.
glyph.auth(optional)A name or label associated with the controlled vocabulary from which the value of glyph.name or glyph.num is taken, or the textual content of the element. Allowed values are: "smufl" (Standard Music Font Layout.)
glyph.uri(optional)The web-accessible location of the controlled vocabulary from which the value of glyph.name or glyph.num is taken, or the textual content of the element. Value conforms to data.URI.
(MEI.externalsymbols) Attributes that specify names or values taken from an external symbol authority.
glyph.name(optional)Glyph name. Value is plain text.
glyph.num(optional)Numeric glyph reference in hexadecimal notation, e.g., "#xE000" or "U+E000". N.B. SMuFL version 1.18 uses the range U+E000 - U+ECBF. Value conforms to data.HEXNUM.
(MEI.shared) Attributes that identify location on a staff in terms of lines and spaces.
loc(optional)Holds the staff location of the feature. Value conforms to data.STAFFLOC.
(MEI.shared) Typographical attributes.
fontfam(optional)Contains the name of a font-family. Value conforms to data.FONTFAMILY.
fontname(optional)Holds the name of a font. Value conforms to data.FONTNAME.
fontsize(optional)Indicates the size of a font expressed in printers' points, i.e., 1/72nd of an inch, relative terms, e.g., small, larger, etc., or percentage values relative to normal size, e.g., 125%. Value conforms to data.FONTSIZE.
fontstyle(optional)Records the style of a font, i.e., italic, oblique, or normal. Value conforms to data.FONTSTYLE.
fontweight(optional)Used to indicate bold type. Value conforms to data.FONTWEIGHT.
letterspacing(optional)Indicates letter spacing (aka tracking) in analogy to the CSS letter-spacing property. Value conforms to data.MEASUREMENTTYPOGRAPHYSIGNED.
lineheight(optional)Indicates line height in analogy to the CSS line-height property. Value conforms to either data.MEASUREMENTTYPOGRAPHYUNSIGNED or data.PERCENT.
(MEI.gestural) Gestural domain attributes.
(MEI.analytical) Analytical domain attributes.
External symbols component declarations.
glyph.auth(optional)A name or label associated with the controlled vocabulary from which the value of glyph.name or glyph.num is taken, or the textual content of the element. Allowed values are: "smufl" (Standard Music Font Layout.)
glyph.name(optional)Glyph name. Value is plain text.
glyph.num(optional)Numeric glyph reference in hexadecimal notation, e.g., "#xE000" or "U+E000". N.B. SMuFL version 1.18 uses the range U+E000 - U+ECBF. Value conforms to data.HEXNUM.
glyph.uri(optional)The web-accessible location of the controlled vocabulary from which the value of glyph.name or glyph.num is taken, or the textual content of the element. Value conforms to data.URI.
Facsimile component declarations.
facs(optional)Points to one or more images, portions of an image, or surfaces which correspond to the current element. One or more values from data.URI, separated by spaces.
Component declarations that are shared between two or more modules.
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.
color(optional)Used to indicate visual appearance. Do not confuse this with the musical term 'color' as used in pre-CMN notation. Value conforms to data.COLOR.
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.
fontfam(optional)Contains the name of a font-family. Value conforms to data.FONTFAMILY.
fontname(optional)Holds the name of a font. Value conforms to data.FONTNAME.
fontsize(optional)Indicates the size of a font expressed in printers' points, i.e., 1/72nd of an inch, relative terms, e.g., small, larger, etc., or percentage values relative to normal size, e.g., 125%. Value conforms to data.FONTSIZE.
fontstyle(optional)Records the style of a font, i.e., italic, oblique, or normal. Value conforms to data.FONTSTYLE.
fontweight(optional)Used to indicate bold type. Value conforms to data.FONTWEIGHT.
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.
letterspacing(optional)Indicates letter spacing (aka tracking) in analogy to the CSS letter-spacing property. Value conforms to data.MEASUREMENTTYPOGRAPHYSIGNED.
lineheight(optional)Indicates line height in analogy to the CSS line-height property. Value conforms to either data.MEASUREMENTTYPOGRAPHYUNSIGNED or data.PERCENT.
loc(optional)Holds the staff location of the feature. Value conforms to data.STAFFLOC.
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.
num(optional)Along with numbase, describes duration as a ratio. num is the first value in the ratio, while numbase is the second. Value is a positive integer.
numbase(optional)Along with num, describes duration as a ratio. num is the first value in the ratio, while numbase is the second. Value is a positive integer.
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.
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.
synch(optional)Points to elements that are synchronous with the current element. One or more values from data.URI, separated by spaces.
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.
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.
User-defined symbols component declarations.
altsym(optional)Provides a way of pointing to a user-defined symbol. It must contain a reference to an ID of a symbolDef element elsewhere in the document. Value conforms to data.URI.
Member of
model.eventLike.mensuralGroups event elements that occur in the mensural repertoire.
model.staffDefPart.mensuralGroups elements that may appear in the declaration of staff features.
Contained By
(MEI.mensural) Groups event elements that occur in the mensural repertoire.
ligatureA mensural notation symbol that combines two or more notes into a single sign.
(MEI.mensural) Groups notated events that may appear at the layer level in the mensural repertoire.
(MEI.shared) Groups notated events at the layer level that are shared by the mensural and neume repertoires.
(MEI.shared) Groups notated events that may appear at the layer level in all repertoires.
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.
layerAn independent stream of events on a staff.
lemContains the lemma, or base text, of a textual variation.
oLayerA layer that contains an alternative to material in another layer.
origContains material which is marked as following the original, rather than being normalized or corrected.
rdgContains a single reading within a textual variation.
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.mensural) Groups elements that may appear in the declaration of staff features.
(MEI.shared) Groups elements that may appear in the declaration of staff features.
staffDefContainer for staff meta-information.
Common Music Notation (CMN) repertoire component declarations.
oLayerA layer that contains an alternative to material in another layer.
Critical apparatus component declarations.
lemContains the lemma, or base text, of a textual variation.
rdgContains a single reading within a textual variation.
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.
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.
Mensural repertoire component declarations.
ligatureA mensural notation symbol that combines two or more notes into a single sign.
Component declarations that are shared between two or more modules.
layerAn independent stream of events on a staff.
staffDefContainer for staff meta-information.
May Contain
– (<proport> may not have child elements)
Remarks

The proport element is provided for the encoding of mensural notation. It allows the description of note durations as arithmetic ratios. While mensuration refers to the normal relationships between note durations, proportion affects the relations of the note durations to the tactus.

Declaration
<elementSpec ident="proport" module="MEI.mensural">
<gloss versionDate="2022-05-18" xml:lang="en">proportion</gloss>
<desc xml:lang="en">Description of note duration as arithmetic ratio.</desc>
<classes>
<memberOf key="att.common"/>
<memberOf key="att.facsimile"/>
<memberOf key="att.proport.log"/>
<memberOf key="att.proport.vis"/>
<memberOf key="att.proport.ges"/>
<memberOf key="att.proport.anl"/>
<memberOf key="model.eventLike.mensural"/>
<memberOf key="model.staffDefPart.mensural"/>
</classes>
<content>
<rng:empty/>
</content>
<remarks xml:lang="en">
<p>The proport element is provided for the encoding of mensural notation. It allows the description of note durations as arithmetic ratios. While mensuration refers to the normal relationships between note durations, proportion affects the relations of the note durations to the tactus.</p>
</remarks>
</elementSpec>
MEI Version: 5.0(#eb14650)