<curve>

A curved line that cannot be represented by a more specific element, such as a slur.
Module
MEI.usersymbols
Attributes
bezier, bulge, class, color, copyof, corresp, curvedir, endho, endid, endto, endvo, facs, follows, func, ho, label, lform, lwidth, n, next, precedes, prev, resp, sameas, startho, startid, startto, startvo, synch, to, type, vo, x, x2, xml:base, xml:id, y, y2
bezier(optional)Records the placement of Bezier control points as a series of pairs of space-separated values; e.g., 19 45 -32 118. One or more values, each consisting of a sequence of decimal and decimal sub-values.
bulge(optional)Describes a curve as one or more pairs of values with respect to an imaginary line connecting the starting and ending points of the curve. The first value captures a distance to the left (positive value) or right (negative value) of the line, expressed in virtual units. The second value of each pair represents a point along the line, expressed as a percentage of the line's length. N.B. An MEI virtual unit (VU) is half the distance between adjacent staff lines. One or more of decimal.
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.
curvedir(optional)Describes a curve with a generic term indicating the direction of curvature. Allowed values are: "above" (Upward curve.), "below" (Downward curve.), "mixed" (A "meandering" curve, both above and below the items it pertains to.)
endho(optional)Records the horizontal adjustment of a feature's programmatically-determined end point. Value conforms to data.MEASUREMENTREL.
endid(optional)Indicates the final element in a sequence of events to which the feature applies. Value conforms to data.URI.
endto(optional)Records a timestamp adjustment of a feature's programmatically-determined end point. Value conforms to data.TSTAMPOFFSET.
endvo(optional)Records a vertical adjustment of a feature's programmatically-determined end point. Value conforms to data.MEASUREMENTREL.
facs(optional)Permits the current element to reference a facsimile surface or image zone which corresponds to it. 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.
func(recommended)Indicates the function of the curve. Allowed values are: "unknown" (The function of the curve is unknown.)
ho(optional)Records a horizontal adjustment to a feature's programmatically-determined location in terms of staff interline distance; that is, in units of 1/2 the distance between adjacent staff lines. Value conforms to data.MEASUREMENTREL.
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.
lform(optional)Describes the line style of a curve. Value conforms to data.LINEFORM.
lwidth(optional)Width of a curved line. Value conforms to data.LINEWIDTH.
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.
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.
startho(optional)Records the horizontal adjustment of a feature's programmatically-determined start point. Value conforms to data.MEASUREMENTREL.
startid(optional)Holds a reference to the first element in a sequence of events to which the feature applies. Value conforms to data.URI.
startto(optional)Records a timestamp adjustment of a feature's programmatically-determined start point. Value conforms to data.TSTAMPOFFSET.
startvo(optional)Records a vertical adjustment of a feature's programmatically-determined start point. Value conforms to data.MEASUREMENTREL.
synch(optional)Points to elements that are synchronous with the current element. One or more values from data.URI, separated by spaces.
to(optional)Records a timestamp adjustment of a feature's programmatically-determined location in terms of musical time; that is, beats. Value conforms to data.TSTAMPOFFSET.
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.
vo(optional)Records the vertical adjustment of a feature's programmatically-determined location in terms of staff interline distance; that is, in units of 1/2 the distance between adjacent staff lines. Value conforms to data.MEASUREMENTREL.
x(optional)Encodes an x coordinate for a feature in an output coordinate system. When it is necessary to record the placement of a feature in a facsimile image, use the facs attribute. Value is a decimal number.
x2(optional)Encodes the optional 2nd x coordinate. Value is a decimal number.
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.
y(optional)Encodes a y coordinate for a feature in an output coordinate system. When it is necessary to record the placement of a feature in a facsimile image, use the facs attribute. Value is a decimal number.
y2(optional)Encodes the optional 2nd y coordinate. Value is a decimal number.
(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.analytical) Analytical domain attributes.
(MEI.gestural) Gestural domain attributes.
(MEI.usersymbols) Logical domain attributes.
func(recommended)Indicates the function of the curve. Allowed values are: "unknown" (The function of the curve is unknown.)
(MEI.shared) Attributes recording the identifiers of the first and last elements of a sequence of elements to which the current element is associated.
endid(optional)Indicates the final element in a sequence of events to which the feature applies. Value conforms to data.URI.
(MEI.shared) Attributes that identify a relative starting point.
startid(optional)Holds a reference to the first element in a sequence of events to which the feature applies. Value conforms to data.URI.
(MEI.visual) Visual domain attributes.
(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.shared) Attributes that describe curvature.
bezier(optional)Records the placement of Bezier control points as a series of pairs of space-separated values; e.g., 19 45 -32 118. One or more values, each consisting of a sequence of decimal and decimal sub-values.
bulge(optional)Describes a curve as one or more pairs of values with respect to an imaginary line connecting the starting and ending points of the curve. The first value captures a distance to the left (positive value) or right (negative value) of the line, expressed in virtual units. The second value of each pair represents a point along the line, expressed as a percentage of the line's length. N.B. An MEI virtual unit (VU) is half the distance between adjacent staff lines. One or more of decimal.
curvedir(optional)Describes a curve with a generic term indicating the direction of curvature. Allowed values are: "above" (Upward curve.), "below" (Downward curve.), "mixed" (A "meandering" curve, both above and below the items it pertains to.)
(MEI.shared) Attributes that record the visual rendition of curves.
lform(optional)Describes the line style of a curve. Value conforms to data.LINEFORM.
lwidth(optional)Width of a curved line. Value conforms to data.LINEWIDTH.
(MEI.shared) Visual offset attributes. Some items may have their location recorded in terms of offsets from their programmatically-determined location. The ho attribute records the horizontal offset while vo records the vertical. The to attribute holds a timestamp offset, the most common use of which is as an alternative to the ho attribute.
(MEI.shared) Horizontal offset attributes.
ho(optional)Records a horizontal adjustment to a feature's programmatically-determined location in terms of staff interline distance; that is, in units of 1/2 the distance between adjacent staff lines. Value conforms to data.MEASUREMENTREL.
(MEI.shared) Horizontal offset attributes specified in terms of time.
to(optional)Records a timestamp adjustment of a feature's programmatically-determined location in terms of musical time; that is, beats. Value conforms to data.TSTAMPOFFSET.
(MEI.shared) Vertical offset attributes.
vo(optional)Records the vertical adjustment of a feature's programmatically-determined location in terms of staff interline distance; that is, in units of 1/2 the distance between adjacent staff lines. Value conforms to data.MEASUREMENTREL.
(MEI.shared) Visual offset attributes. Some items may have their location recorded in terms of pairs of offsets from their programmatically-determined location. The startho and endho attributes record the horizontal offsets of the start and end points of the item, respectively. Similarly, the startvo and endvo attributes record the vertical offsets of the start and end points of the item. The startto and endto attributes hold timestamp offsets, the most common use of which is as alternatives to the ho attributes.
(MEI.shared) Horizontal offset requiring a pair of attributes.
startho(optional)Records the horizontal adjustment of a feature's programmatically-determined start point. Value conforms to data.MEASUREMENTREL.
endho(optional)Records the horizontal adjustment of a feature's programmatically-determined end point. Value conforms to data.MEASUREMENTREL.
(MEI.shared) Horizontal offset attributes requiring a pair of attributes specified in terms of time.
startto(optional)Records a timestamp adjustment of a feature's programmatically-determined start point. Value conforms to data.TSTAMPOFFSET.
endto(optional)Records a timestamp adjustment of a feature's programmatically-determined end point. Value conforms to data.TSTAMPOFFSET.
(MEI.shared) Vertical offset attributes requiring a pair of attributes.
startvo(optional)Records a vertical adjustment of a feature's programmatically-determined start point. Value conforms to data.MEASUREMENTREL.
endvo(optional)Records a vertical adjustment of a feature's programmatically-determined end point. Value conforms to data.MEASUREMENTREL.
(MEI.shared) Output coordinate attributes. Some elements may have their exact rendered *output* coordinates recorded. x and y attributes indicate where to place the rendered output. Recording the coordinates of a feature in a facsimile requires the use of the facs attribute.
x(optional)Encodes an x coordinate for a feature in an output coordinate system. When it is necessary to record the placement of a feature in a facsimile image, use the facs attribute. Value is a decimal number.
y(optional)Encodes a y coordinate for a feature in an output coordinate system. When it is necessary to record the placement of a feature in a facsimile image, use the facs attribute. Value is a decimal number.
(MEI.shared) Output coordinate attributes. Some elements may need 2 coordinate pairs to record their rendered *output* coordinates. The attributes indicate where to place the rendered output. Recording the coordinates of a feature in a facsimile requires the use of the facs attribute.
x2(optional)Encodes the optional 2nd x coordinate. Value is a decimal number.
y2(optional)Encodes the optional 2nd y coordinate. Value is a decimal number.
(MEI.facsimile) Attributes that associate a feature corresponding with all or part of an image.
facs(optional)Permits the current element to reference a facsimile surface or image zone which corresponds to it. One or more values from data.URI, separated by spaces.
Facsimile component declarations.
facs(optional)Permits the current element to reference a facsimile surface or image zone which corresponds to it. One or more values from data.URI, separated by spaces.
Component declarations that are shared between two or more modules.
bezier(optional)Records the placement of Bezier control points as a series of pairs of space-separated values; e.g., 19 45 -32 118. One or more values, each consisting of a sequence of decimal and decimal sub-values.
bulge(optional)Describes a curve as one or more pairs of values with respect to an imaginary line connecting the starting and ending points of the curve. The first value captures a distance to the left (positive value) or right (negative value) of the line, expressed in virtual units. The second value of each pair represents a point along the line, expressed as a percentage of the line's length. N.B. An MEI virtual unit (VU) is half the distance between adjacent staff lines. One or more of decimal.
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.
curvedir(optional)Describes a curve with a generic term indicating the direction of curvature. Allowed values are: "above" (Upward curve.), "below" (Downward curve.), "mixed" (A "meandering" curve, both above and below the items it pertains to.)
endho(optional)Records the horizontal adjustment of a feature's programmatically-determined end point. Value conforms to data.MEASUREMENTREL.
endid(optional)Indicates the final element in a sequence of events to which the feature applies. Value conforms to data.URI.
endto(optional)Records a timestamp adjustment of a feature's programmatically-determined end point. Value conforms to data.TSTAMPOFFSET.
endvo(optional)Records a vertical adjustment of a feature's programmatically-determined end point. Value conforms to data.MEASUREMENTREL.
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.
ho(optional)Records a horizontal adjustment to a feature's programmatically-determined location in terms of staff interline distance; that is, in units of 1/2 the distance between adjacent staff lines. Value conforms to data.MEASUREMENTREL.
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.
lform(optional)Describes the line style of a curve. Value conforms to data.LINEFORM.
lwidth(optional)Width of a curved line. Value conforms to data.LINEWIDTH.
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.
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.
startho(optional)Records the horizontal adjustment of a feature's programmatically-determined start point. Value conforms to data.MEASUREMENTREL.
startid(optional)Holds a reference to the first element in a sequence of events to which the feature applies. Value conforms to data.URI.
startto(optional)Records a timestamp adjustment of a feature's programmatically-determined start point. Value conforms to data.TSTAMPOFFSET.
startvo(optional)Records a vertical adjustment of a feature's programmatically-determined start point. Value conforms to data.MEASUREMENTREL.
synch(optional)Points to elements that are synchronous with the current element. One or more values from data.URI, separated by spaces.
to(optional)Records a timestamp adjustment of a feature's programmatically-determined location in terms of musical time; that is, beats. Value conforms to data.TSTAMPOFFSET.
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.
vo(optional)Records the vertical adjustment of a feature's programmatically-determined location in terms of staff interline distance; that is, in units of 1/2 the distance between adjacent staff lines. Value conforms to data.MEASUREMENTREL.
x(optional)Encodes an x coordinate for a feature in an output coordinate system. When it is necessary to record the placement of a feature in a facsimile image, use the facs attribute. Value is a decimal number.
x2(optional)Encodes the optional 2nd x coordinate. Value is a decimal number.
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.
y(optional)Encodes a y coordinate for a feature in an output coordinate system. When it is necessary to record the placement of a feature in a facsimile image, use the facs attribute. Value is a decimal number.
y2(optional)Encodes the optional 2nd y coordinate. Value is a decimal number.
User-defined symbols component declarations.
func(recommended)Indicates the function of the curve. Allowed values are: "unknown" (The function of the curve is unknown.)
Member of
model.graphicPrimitiveLikeGroups elements that function as drawing primitives.
Contained By
lv(laissez vibrer) – A "tie-like" indication that a note should ring beyond its written duration.
phraseIndication of 1) a "unified melodic idea" or 2) performance technique.
slurIndication of 1) a "unified melodic idea" or 2) performance technique.
tieAn indication that two notes of the same pitch form a single note with their combined rhythmic values.
(MEI.usersymbols) Groups elements that function as drawing primitives.
abbr(abbreviation) – A generic element for 1) a shortened form of a word, including an acronym or 2) a shorthand notation.
add(addition) – Marks an addition to the text.
attaccaAn instruction to begin the next section or movement of a composition without pause.
corr(correction) – Contains the correct form of an apparent erroneous passage.
damageContains an area of damage to the physical medium.
del(deletion) – Contains information deleted, marked as deleted, or otherwise indicated as superfluous or spurious in the copy text by an author, scribe, annotator, or corrector.
dir(directive) – An instruction expressed as a combination of text and symbols — such as segno and coda symbols, fermatas over a bar line, etc., typically above, below, or between staves, but not on the staff — that is not encoded elsewhere in more specific elements, like tempo or dynam.
endingAlternative ending for a repeated passage of music; i.e., prima volta, seconda volta, etc.
expan(expansion) – Contains the expansion of an abbreviation.
harm(harmony) – An indication of harmony, e.g., chord names, tablature grids, harmonic analysis, figured bass.
layerAn independent stream of events on a staff.
lem(lemma) – Contains the lemma, or base text, of a textual variation.
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.
oLayer(ossia layer) – A layer that contains an alternative to material in another layer.
oStaff(ossia staff) – A staff that holds an alternative passage which may be played instead of the original material.
orig(original) – Contains material which is marked as following the original, rather than being normalized or corrected.
ornamAn element indicating an ornament that is not a mordent, turn, or trill.
partAn alternative visual rendition of the score from the point of view of a particular performer (or group of performers).
pgDesc(page description) – Contains a brief prose description of the appearance or description of the content of a physical page.
rdg(reading) – Contains a single reading within a textual variation.
reg(regularization) – Contains 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.
scoreFull score view of the musical content.
sectionSegment of music data.
sicContains apparently incorrect or inaccurate material.
signifLetSignificantive letter(s).
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.
suppliedContains material supplied by the transcriber or editor for any reason.
syllableNeume notation can be thought of as "neumed text". Therefore, the syllable element provides high-level organization in this repertoire.
symbolDef(symbol definition) – Declaration of an individual symbol in a symbolTable.
tempoText and symbols descriptive of tempo, mood, or style, e.g., "allarg.", "a tempo", "cantabile", "Moderato", "♩=60", "Moderato ♩ =60").
unclearContains material that cannot be transcribed with certainty because it is illegible or inaudible in the source.
Common Music Notation (CMN) repertoire component declarations.
attaccaAn instruction to begin the next section or movement of a composition without pause.
lv(laissez vibrer) – A "tie-like" indication that a note should ring beyond its written duration.
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.
oLayer(ossia layer) – A layer that contains an alternative to material in another layer.
oStaff(ossia staff) – A staff that holds an alternative passage which may be played instead of the original material.
slurIndication of 1) a "unified melodic idea" or 2) performance technique.
tieAn indication that two notes of the same pitch form a single note with their combined rhythmic values.
Critical apparatus component declarations.
lem(lemma) – Contains the lemma, or base text, of a textual variation.
rdg(reading) – Contains a single reading within a textual variation.
Editorial and transcriptional component declarations.
abbr(abbreviation) – A generic element for 1) a shortened form of a word, including an acronym or 2) a shorthand notation.
add(addition) – Marks an addition to the text.
corr(correction) – Contains the correct form of an apparent erroneous passage.
damageContains an area of damage to the physical medium.
del(deletion) – Contains information deleted, marked as deleted, or otherwise indicated as superfluous or spurious in the copy text by an author, scribe, annotator, or corrector.
expan(expansion) – Contains the expansion of an abbreviation.
orig(original) – Contains material which is marked as following the original, rather than being normalized or corrected.
reg(regularization) – Contains 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.
Harmony component declarations.
harm(harmony) – An indication of harmony, e.g., chord names, tablature grids, harmonic analysis, figured bass.
Neume repertoire component declarations.
signifLetSignificantive letter(s).
syllableNeume notation can be thought of as "neumed text". Therefore, the syllable element provides high-level organization in this repertoire.
Component declarations that are shared between two or more modules.
dir(directive) – An instruction expressed as a combination of text and symbols — such as segno and coda symbols, fermatas over a bar line, etc., typically above, below, or between staves, but not on the staff — that is not encoded elsewhere in more specific elements, like tempo or dynam.
endingAlternative ending for a repeated passage of music; i.e., prima volta, seconda volta, etc.
layerAn independent stream of events on a staff.
ornamAn element indicating an ornament that is not a mordent, turn, or trill.
partAn alternative visual rendition of the score from the point of view of a particular performer (or group of performers).
pgDesc(page description) – Contains a brief prose description of the appearance or description of the content of a physical page.
phraseIndication of 1) a "unified melodic idea" or 2) performance technique.
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.
tempoText and symbols descriptive of tempo, mood, or style, e.g., "allarg.", "a tempo", "cantabile", "Moderato", "♩=60", "Moderato ♩ =60").
User-defined symbols component declarations.
symbolDef(symbol definition) – Declaration of an individual symbol in a symbolTable.
May Contain
(<curve> may not have child elements)
Remarks

The starting point of the curve may be identified in absolute output coordinate terms using the x and y attributes or relative to the location of another element using the startid attribute. The attributes in the att.visualOffset class may be used to record horizontal, vertical, or time offsets from the absolute coordinates or from the location of the referenced element. Similarly, the terminal point of the curve may be recorded using either the x2 and y2 coordinates or in relation to the location of another element using the endid attribute. Attributes in the att.visualOffset2 class maybe used to record the offsets of the ending point. The bulge attribute or, alternatively, the bezier attribute, describe the shape of the curve and the lform and lwidth attributes capture its appearance.

Constraints

In the symbolDef context, curve must have either a startid attribute or x and y attributes.
In the symbolDef context, curve must have either an endid attribute or both x2 and y2 attributes.
In the symbolDef context, curve must have either a bezier or bulge attribute.

Declaration
<elementSpec ident="curve" module="MEI.usersymbols">
<desc>A curved line that cannot be represented by a more specific element, such as a slur.</desc>
<classes>
<memberOf key="att.common"/>
<memberOf key="att.curve.anl"/>
<memberOf key="att.curve.ges"/>
<memberOf key="att.curve.log"/>
<memberOf key="att.curve.vis"/>
<memberOf key="att.facsimile"/>
<memberOf key="model.graphicPrimitiveLike"/>
</classes>
<content>
<rng:empty/>
</content>
<constraintSpec ident="symbolDef_curve_attributes_required" scheme="isoschematron">
<constraint>
<sch:rule context="mei:curve[ancestor::mei:symbolDef]">
<sch:assert test="@startid or (@x and @y)">In the symbolDef context, curve must have either a startid attribute or x and y attributes.</sch:assert>
<sch:assert test="@endid or (@x2 and @y2)">In the symbolDef context, curve must have either an endid attribute or both x2 and y2 attributes.</sch:assert>
<sch:assert test="@bezier or @bulge">In the symbolDef context, curve must have either a bezier or bulge attribute.</sch:assert>
</sch:rule>
</constraint>
</constraintSpec>
<remarks>
<p>The starting point of the curve may be identified in absolute output coordinate terms using the <att>x</att> and <att>y</att> attributes or relative to the location of another element using the <att>startid</att> attribute. The attributes in the att.visualOffset class may be used to record horizontal, vertical, or time offsets from the absolute coordinates or from the location of the referenced element. Similarly, the terminal point of the curve may be recorded using either the <att>x2</att> and <att>y2</att> coordinates or in relation to the location of another element using the <att>endid</att> attribute. Attributes in the att.visualOffset2 class maybe used to record the offsets of the ending point. The <att>bulge</att> attribute or, alternatively, the <att>bezier</att> attribute, describe the shape of the curve and the <att>lform</att> and <att>lwidth</att> attributes capture its appearance.</p>
</remarks>
</elementSpec>