Simple test of the minscriptsize attribute on the mstyle node.
<math xmlns="http://www.w3.org/1998/Math/MathML"> <mfrac> <mn>2</mn> <mi>x</mi> </mfrac> <mo>=</mo> <mstyle scriptminsize="20pt"> <mfrac> <mn>2</mn> <mi>x</mi> </mfrac> </mstyle> </math>
Author: Design Science, Inc (D. Doyle)