Tests/feaLib/data/markClass.ttx

<?xml version="1.0" encoding="UTF-8"?>
<ttFont>

  <GDEF>
    <Version value="0x00010000"/>
    <GlyphClassDef>
      <ClassDef glyph="acute" class="3"/>
      <ClassDef glyph="breve" class="3"/>
      <ClassDef glyph="cedilla" class="3"/>
      <ClassDef glyph="dieresis" class="3"/>
      <ClassDef glyph="grave" class="3"/>
    </GlyphClassDef>
  </GDEF>

</ttFont>