<classSpec ident="att.meterSigGrp.log" module="MEI.cmn" type="atts">
<desc>Logical domain attributes.</desc>
<attList org="group">
<attDef ident="func" usage="req">
<desc>Function of the meter signature group.</desc>
<valList type="closed">
<valItem ident="alternating">
<desc>Meter signatures apply to alternating measures.</desc>
</valItem>
<valItem ident="interchanging">
<desc>Meter signatures are interchangeable, e.g. 3/4 and 6/8.</desc>
</valItem>
<valItem ident="mixed">
<desc>Meter signatures with different unit values are used to express a complex metrical
pattern that is not expressible using traditional means, such as 2/4+1/8.</desc>
</valItem>
</valList>
</attDef>
</attList>
</classSpec>