<classSpec ident="att.meiVersion" module="MEI.shared" type="atts">
<desc xml:lang="en">Attributes that record the version of MEI in use.</desc>
<constraintSpec ident="meiVersion.onlyRoot" scheme="schematron">
<desc>Prohibit meiversion attribute on non root elements.</desc>
<constraint>
<sch:rule context="/mei:*//*">
<sch:report test="@meiversion">The @meiversion attribute is not allowed on elements that are not the document root
element.</sch:report>
</sch:rule>
</constraint>
</constraintSpec>
<attList>
<attDef ident="meiversion" usage="opt">
<desc xml:lang="en">Specifies a generic MEI version label.</desc>
<valList type="closed">
<valItem ident="5.1-dev">
<desc xml:lang="en">Version of MEI</desc>
</valItem>
<valItem ident="5.1-dev+anyStart">
<desc>Version of MEI all_anyStart customization</desc>
</valItem>
<valItem ident="5.1-dev+basic">
<desc>Version of MEI basic customization</desc>
</valItem>
<valItem ident="5.1-dev+CMN">
<desc>Version of MEI cmn customization</desc>
</valItem>
<valItem ident="5.1-dev+Mensural">
<desc>Version of MEI mensural customization</desc>
</valItem>
<valItem ident="5.1-dev+Neumes">
<desc>Version of MEI neumes customization</desc>
</valItem>
</valList>
</attDef>
</attList>
</classSpec>