     </p>
<ul>
          
<li>
            Put the SVG into a separate file and use it with
            fo:external-graphics.
          </li>
          
<li>
            Use a separate SVG file which contains only the gradient (and
            perhaps other SVG stuff you want to reference) and point an absolute
            URL to it:
            <span class="codefrag">fill="url(file:///c:/refstuff/grad.svg#PurpleToWhite)"</span>.
          </li>
          
<li>
            Same as above but use a relative U