<classSpec ident="att.crit" module="MEI.critapp" type="atts">
<desc>Attributes common to all elements representing variant readings.</desc>
<classes>
<memberOf
key="att.handIdent"/>
<memberOf
key="att.sequence"/>
<memberOf
key="att.source"/>
</classes>
<attList org="group">
<attDef ident="cause" usage="opt">
<desc>Classifies the cause for the variant reading, according to any appropriate typology
of
possible origins.</desc>
<datatype maxOccurs="1" minOccurs="1">
<rng:data type="NMTOKEN"/>
</datatype>
</attDef>
</attList>
</classSpec>