<classSpec ident="att.verticalGroup" module="MEI.shared" type="atts">
<desc>Attributes that record grouping of vertically aligned elements.</desc>
<attList org="group">
<attDef ident="vgrp" usage="opt">
<desc>Provides a label for members of a vertically aligned group.</desc>
<datatype maxOccurs="1" minOccurs="1">
<rng:data type="positiveInteger"/>
</datatype>
</attDef>
</attList>
</classSpec>