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File:	Topics/StretchyChars/Vertically/stretchVertNest2
CVS-ID:
Author:	Dave Doyle, Design Science
Description:	Tests of nested vertical stretching
Sample Rendering:

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Source Code:

<math xmlns="http://www.w3.org/1998/Math/MathML"> 
  <mstyle fontsize="130%" displaystyle="true"> 
    <mrow> 
      <mo stretchy="true">(</mo> 
      <mrow> 
        <mo stretchy="true">(</mo> 
        <mfrac> 
          <mi>x</mi> 
          <mi>y</mi> 
        </mfrac> 
        <mo stretchy="true">)</mo> 
      </mrow> 
      <mo stretchy="true">)</mo> 
    </mrow> 
  </mstyle> 
</math>