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 @tab.fret attribute.
<elementSpec xmlns="http://www.tei-c.org/ns/1.0" rend="add" ident="barre" module="MEI.stringtab"><desc xml:lang="en">A barre in a chord tablature grid.</desc>
<classes>
<memberOf key="att.common"/>
<memberOf key="att.startEndId"/>
<memberOf key="att.stringtab"/>
<memberOf key="att.fing.finger"/>
</classes>
<content>
<empty/>
</content>
<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>tab.fret</att>
attribute.</p>
</remarks></elementSpec>