Document
++Group IsControlElement=false
++++Custom MathML='<math><newline>  <mtable><newline>    <mtr><newline>      <mtd class="test"><mn>1</mn></mtd><newline>      <mtd><mn>2</mn></mtd><newline>      <mtd><mn>3</mn></mtd><newline>    </mtr><newline>    <mtr><newline>      <mtd><mn>4</mn></mtd><newline>      <mtd><mn>5</mn></mtd><newline>      <mtd><mn>6</mn></mtd><newline>    </mtr><newline>  </mtable><newline></math>'
++++++Custom IsControlElement=false
++++++++Custom IsControlElement=false
++++++++++Custom IsControlElement=false
++++++++++++Custom IsControlElement=false
++++++++++++++Text Name='1' IsControlElement=false
++++++++++Custom IsControlElement=false
++++++++++++Custom IsControlElement=false
++++++++++++++Text Name='2' IsControlElement=false
++++++++++Custom IsControlElement=false
++++++++++++Custom IsControlElement=false
++++++++++++++Text Name='3' IsControlElement=false
++++++++Custom IsControlElement=false
++++++++++Custom IsControlElement=false
++++++++++++Custom IsControlElement=false
++++++++++++++Text Name='4' IsControlElement=false
++++++++++Custom IsControlElement=false
++++++++++++Custom IsControlElement=false
++++++++++++++Text Name='5' IsControlElement=false
++++++++++Custom IsControlElement=false
++++++++++++Custom IsControlElement=false
++++++++++++++Text Name='6' IsControlElement=false