att.alignment

Temporal alignment attributes.
Module MEI.performance
Members
f (via att.f.anl)
Attributes
@when(optional)Indicates the point of occurrence of this feature along a time line. Its value must be the ID of a when element elsewhere in the document. Value conforms to data.URI. att.alignment
Declaration
<attDef ident="when" usage="opt">
<desc>Indicates the point of occurrence of this feature along a time line. Its value must be the ID of a
<gi scheme="MEI">when</gi>
element elsewhere in the document.</desc>
<datatype maxOccurs="1" minOccurs="1">
<rng:ref name="data.URI" />
</datatype>
</attDef>
Constraint
@when attribute should have content.
A value in @when should correspond to the @xml:id attribute of a when element.
<sch:rule context="@when">
<sch:assert role="warning" test="not(normalize-space(.) eq '')">@when attribute should have content.</sch:assert>
<sch:assert role="warning" test="every $i in tokenize(., '\s+') satisfies substring($i,2)=//mei:when/@xml:id">A value in @when should correspond to the @xml:id attribute of a when element.</sch:assert>
</sch:rule>