<ossia>

Captures original notation and a differently notated version *present in the source being transcribed*.
Module
Attributes
@class, @copyof, @corresp, @facs, @follows, @label, @meiversion, @n, @next, @precedes, @prev, @resp, @sameas, @synch, @type, @xml:base, @xml:id
@class(optional)Contains one or more URIs which denote classification terms that apply to the entity bearing this attribute.
@copyof(optional)Points to an element of which the current element is a copy.
@corresp(optional)Used to point to other elements that correspond to this one in a generic fashion.
@facs(optional)Points to one or more images, portions of an image, or surfaces which correspond to the current element.
@follows(optional)points to one or more events in a user-defined collection that are known to be predecessors of the current element.
@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.
@meiversion(recommended)Specifies a generic MEI version label. Allowed values are: "6.0-dev" (Version of MEI), "6.0-dev+anyStart" (Version of MEI All AnyStart customization)
@n(optional)Provides a number-like designation that indicates an element’s position in a sequence of similar elements. May not contain space characters.
@next(optional)Used to point to the next event(s) in a user-defined collection.
@precedes(optional)Points to one or more events in a user-defined collection that are known to be successors of the current element.
@prev(optional)Points to the previous event(s) in a user-defined collection.
@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.
@sameas(optional)Points to an element that is the same as the current element but is not a literal copy of the current element.
@synch(optional)Points to elements that are synchronous with the current element.
@type(optional)Designation which characterizes the element in some sense, using any convenient classification scheme or typology that employs single-token labels.
@xml:base(optional)Provides a base URI reference with which applications can resolve relative URI references into absolute URI references.
@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.
(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.
(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.
(MEI.shared) Attributes that record the version of MEI in use.
@meiversion(recommended)Specifies a generic MEI version label. Allowed values are: "6.0-dev" (Version of MEI), "6.0-dev+anyStart" (Version of MEI All AnyStart customization)
(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.
(MEI.shared) Attributes that specify element-to-element relationships.
@copyof(optional)Points to an element of which the current element is a copy.
@corresp(optional)Used to point to other elements that correspond to this one in a generic fashion.
@follows(optional)points to one or more events in a user-defined collection that are known to be predecessors of the current element.
@next(optional)Used to point to the next event(s) in a user-defined collection.
@precedes(optional)Points to one or more events in a user-defined collection that are known to be successors of the current element.
@prev(optional)Points to the previous event(s) in a user-defined collection.
@sameas(optional)Points to an element that is the same as the current element but is not a literal copy of the current element.
@synch(optional)Points to elements that are synchronous with the current element.
(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.
(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.
(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.
(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.
(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.
(MEI.cmn) Logical domain attributes.
(MEI.visual) Visual domain attributes.
(MEI.gestural) Gestural domain attributes.
(MEI.analytical) Analytical domain attributes.
@facs(optional)Points to one or more images, portions of an image, or surfaces which correspond to the current element.
@class(optional)Contains one or more URIs which denote classification terms that apply to the entity bearing this attribute.
@copyof(optional)Points to an element of which the current element is a copy.
@corresp(optional)Used to point to other elements that correspond to this one in a generic fashion.
@follows(optional)points to one or more events in a user-defined collection that are known to be predecessors of the current element.
@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.
@meiversion(recommended)Specifies a generic MEI version label. Allowed values are: "6.0-dev" (Version of MEI), "6.0-dev+anyStart" (Version of MEI All AnyStart customization)
@n(optional)Provides a number-like designation that indicates an element’s position in a sequence of similar elements. May not contain space characters.
@next(optional)Used to point to the next event(s) in a user-defined collection.
@precedes(optional)Points to one or more events in a user-defined collection that are known to be successors of the current element.
@prev(optional)Points to the previous event(s) in a user-defined collection.
@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.
@sameas(optional)Points to an element that is the same as the current element but is not a literal copy of the current element.
@synch(optional)Points to elements that are synchronous with the current element.
@type(optional)Designation which characterizes the element in some sense, using any convenient classification scheme or typology that employs single-token labels.
@xml:base(optional)Provides a base URI reference with which applications can resolve relative URI references into absolute URI references.
@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.
Member of
model.ossiaLikeGroups elements that function like ossia.
Contained By
(MEI.cmn) Groups elements that function like ossia.
(MEI.cmn) Groups elements that may appear within a CMN measure.
<measure>Unit 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.
(MEI.shared) Groups elements that are components of a staff.
<oStaff>A staff that holds an alternative passage which may be played instead of the original material.
<staff>A 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.
<measure>Unit 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.
<oStaff>A staff that holds an alternative passage which may be played instead of the original material.
<staff>A 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.
May Contain
<oLayer>A layer that contains an alternative to material in another layer.
<oStaff>A staff that holds an alternative passage which may be played instead of the original material.
(MEI.shared) Groups elements that function as notational layers within a staff.
<layer>An independent stream of events on a staff.
(MEI.shared) Groups elements that function like staves.
<staff>A 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.
<oLayer>A layer that contains an alternative to material in another layer.
<oStaff>A staff that holds an alternative passage which may be played instead of the original material.
<layer>An independent stream of events on a staff.
<staff>A 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.
Remarks

The alternative material in an ossia often provides a simpler, easier-to-perform option, while at other times the alternate material provides indications of performance practice, such as ornamentation. Often an ossia is rendered above the main staff on a reduced-size staff. Sometimes the alternate material occurs on the same staff as the primary text, but in a separate layer. In this case, the alternative material is often rendered in small-sized notation.

Constraints

In a measure, ossia may only contain staff and oStaff elements.
In a staff, ossia may only contain layer and oLayer elements.

Declaration
<elementSpec xmlns="http://www.tei-c.org/ns/1.0" rend="add" ident="ossia" module="MEI.cmn">
<desc xml:lang="en">Captures original notation and a differently notated version
<hi rend="bold">*present in the source being transcribed*</hi>
.</desc>
<classes>
<memberOf key="att.common"/>
<memberOf key="att.facsimile"/>
<memberOf key="att.ossia.log"/>
<memberOf key="att.ossia.vis"/>
<memberOf key="att.ossia.ges"/>
<memberOf key="att.ossia.anl"/>
<memberOf key="model.ossiaLike"/>
</classes>
<content>
<alternate minOccurs="1" maxOccurs="1">
<interleave minOccurs="1" maxOccurs="1">
<elementRef key="oStaff" minOccurs="1" maxOccurs="unbounded"/>
<classRef key="model.staffLike" minOccurs="1" maxOccurs="unbounded"/>
</interleave>
<interleave minOccurs="1" maxOccurs="1">
<elementRef key="oLayer" minOccurs="1" maxOccurs="unbounded"/>
<classRef key="model.layerLike" minOccurs="1" maxOccurs="unbounded"/>
</interleave>
</alternate>
</content>
<constraintSpec ident="Check_ossia" scheme="schematron">
<constraint>
<sch:pattern>
<sch:rule context="mei:measure/mei:ossia">
<sch:assert test="count(mei:*) = count(mei:staff)+count(mei:oStaff)">In a measure, ossia may only contain staff and oStaff elements.</sch:assert>
</sch:rule>
<sch:rule context="mei:staff/mei:ossia">
<sch:assert test="count(mei:*) = count(mei:layer)+count(mei:oLayer)">In a staff, ossia may only contain layer and oLayer elements.</sch:assert>
</sch:rule>
</sch:pattern>
</constraint>
</constraintSpec>
<remarks xml:lang="en">
<p>The alternative material in an ossia often provides a simpler, easier-to-perform option, while at other times the alternate material provides indications of performance practice, such as ornamentation. Often an ossia is rendered above the main staff on a reduced-size staff. Sometimes the alternate material occurs on the same staff as the primary text, but in a separate layer. In this case, the alternative material is often rendered in small-sized notation.</p>
</remarks>
</elementSpec>