data.MEASUREMENTABS

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.MEASUREMENTREL, which may be used to express relative measures, only positive values are allowed.
Module	MEI
Used by	data.LINEWIDTH, att.hairpin.vis (@opening), att.height (@height), att.pages (@page.height), att.stems (@stem.len), att.systems (@system.leftmar), att.width (@width)
Declaration	`<content> <rng:data type="token"> <rng:param name="pattern">(\+)?\d+(\.\d+)?(cm\|mm\|in\|pt\|pc\|px\|vu)? </rng:param> </rng:data> </content>`