Attribute: columnalign
In <mml:math>
columnalign CDATA #IMPLIED
In <mml:mtable>
columnalign CDATA #IMPLIED
In <mml:mtr>
columnalign CDATA #IMPLIED
In <mml:mtd>
columnalign (left|center|right) #IMPLIED
In <mml:mlabeledtr>
columnalign CDATA #IMPLIED
In <mml:mstyle>
columnalign CDATA #IMPLIED