Attribute: subscriptshift
In <mml:msub>
subscriptshift CDATA #IMPLIED
In <mml:msubsup>
subscriptshift CDATA #IMPLIED
In <mml:mstyle>
subscriptshift CDATA #IMPLIED
In <mml:mmultiscripts>
subscriptshift CDATA #IMPLIED
In <mml:math>
subscriptshift CDATA #IMPLIED