The @startid and @endid attributes are used to indicate the <chordMember> elements on which the barre starts and finishes respectively. The fret at which the barre should be created is recorded by the @fret attribute.
<elementSpec ident="barre" module="MEI.stringtab">
<desc xml:lang="en">A barre in a chord tablature grid.</desc>
<content>
<empty/>
</content>
<attList>
<attDef ident="fret" usage="opt">
<desc xml:lang="en">This attribute is deprecated in favor of
<att>tab.fret</att>, and will be removed in a future version. Records the location at which the strings
should be stopped against a fret in a fretboard diagram. This may or may not be the
same as the actual location on the fretboard of the instrument in performance.</desc>
<datatype>
<rng:data type="positiveInteger">
<rng:param name="minInclusive">1</rng:param>
<rng:param name="maxInclusive">5</rng:param>
</rng:data>
</datatype>
</attDef>
</attList>
<remarks xml:lang="en">
<p>The <att>startid</att> and <att>endid</att> attributes are used to indicate the <gi scheme="MEI">chordMember</gi> elements on which the barre starts and finishes
respectively. The fret at which the barre should be created is recorded by the <att>fret</att>
attribute.</p>
</remarks>
</elementSpec>