<classSpec ident="att.medium" module="MEI.shared" type="atts">
<desc>Attributes describing a writing medium, such as pencil or ink.</desc>
<attList org="group">
<attDef ident="medium" usage="opt">
<desc>Describes the writing medium.</desc>
<datatype maxOccurs="1" minOccurs="1">
<rng:data type="string"/>
</datatype>
</attDef>
</attList>
</classSpec>