<macroSpec ident="data.MEASUREMENTREL" module="MEI" type="dt">
<desc>Measurement expressed in real-world (e.g., 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>