title: subscripts and superscripts in SVG
body: <p>I am trying to display sub- and superscripts with SVG using the following code <a href="http://www.svgbasics.com/font_effects_italic.html" rel="noreferrer">from this site</a> </p>
  
  <pre><code>&lt;svg xmlns="http://www.w3.org/2000/svg" version="1.1"&gt;
  &lt;g&gt;
      &lt;text x = "10" y = "25" font-size = "20"&gt;
          &lt;tspan&gt;
              e = mc 
              &lt;tspan baseline-shift = "super"&gt;2&lt;/tspan&gt;
          &lt;/tspan&gt;
          &lt;tspan x = "10" y = "60"&gt;
              T 
              &lt;tspan baseline-shift = "sub"&gt;i+2&lt;/tspan&gt;
              =T 
              &lt;tspan baseline-shift = "sub"&gt;i&lt;/tspan&gt;
              + T 
              &lt;tspan baseline-shift = "sub"&gt;i+1&lt;/tspan&gt;
          &lt;/tspan&gt;
      &lt;/text&gt;
  &lt;/g&gt;
  </code></pre>
  
  <p></p>
  
  <p>but the sub/superscripts do not display in IE or Firefox. Is this unimplemented or is there another problem? [Are you able to see the subscripts displayed properly?]</p>