<macroSpec ident="data.DURATION" module="MEI" type="dt">
<desc>Logical, that is, written, duration attribute values.</desc>
<content>
<rng:choice>
<rng:ref
name="data.DURATION.cmn"
/>
<rng:ref
name="data.DURATION.mensural"
/>
</rng:choice>
</content>
</macroSpec>