<macroSpec ident="data.MEASUREMENTREL" module="MEI" type="dt">
<desc>Measurement expressed in real-world (
<abbr>e.g.</abbr>, centimeters, millimeters, inches, points,
picas, or pixels) or virtual units (vu). 'vu' is the default value. Unlike
data.MEASUREMENTABS, in which only positive values are allowed, both positive and
negative
values are permitted.</desc>
<content>
<rng:data type="token">
<rng:param name="pattern">(\+|-)?\d+(\.\d+)?(cm|mm|in|pt|pc|px|vu)?</rng:param>
</rng:data>
</content>
</macroSpec>