rootWebArea
++genericContainer ignored
++++genericContainer
++++++mathMLMath
++++++++mathMLRow
++++++++++mathMLFraction
++++++++++++mathMLNumber
++++++++++++++staticText name='1'
++++++++++++++++inlineTextBox name='1'
++++++++++++mathMLNumber
++++++++++++++staticText name='2'
++++++++++++++++inlineTextBox name='2'
++++++++++mathMLText