<macroSpec xmlns="http://www.tei-c.org/ns/1.0" rend="add" ident="data.DURATION" module="MEI" type="dt"> <desc xml:lang="en">Logical, that is, written, duration attribute values.</desc> <content> <choice><ref name="data.DURATION.cmn"/> <ref name="data.DURATION.mensural"/></choice> </content> </macroSpec>