<rng:element name="refState">
<rng:ref name="att.global.attributes"/>
<rng:ref name="att.sourced.attributes"/>
<rng:attribute name="unit">
<rng:choice>
<rng:value>page</rng:value>
<rng:value>column</rng:value>
<rng:value>line</rng:value>
<rng:value>book</rng:value>
<rng:value>poem</rng:value>
<rng:value>canto</rng:value>
<rng:value>stanza</rng:value>
<rng:value>act</rng:value>
<rng:value>scene</rng:value>
<rng:value>section</rng:value>
<rng:value>absent</rng:value>
<rng:data type="Name"/>
</rng:choice>
</rng:attribute>
<rng:optional>
<rng:attribute name="length">
<rng:ref name="data.count"/>
</rng:attribute>
</rng:optional>
<rng:optional>
<rng:attribute name="delim">
<rng:text/>
</rng:attribute>
</rng:optional>
<rng:empty/>
</rng:element>
element refState
{
att.global.attributes,
att.sourced.attributes,
attribute unit
{
"page"
| "column"
| "line"
| "book"
| "poem"
| "canto"
| "stanza"
| "act"
| "scene"
| "section"
| "absent"
| xsd:Name
},
attribute length { data.count }?,
attribute delim { text }?,
empty
}