Support for hyperlinks

Provide support for hyperlinks (the <a> element in SVG and PDF hyperlinks)

Original description:
I use Inkscape every day as an interaction designer to create high fidelity mockups of user interfaces.
Until know, my workflow is to create a bunch of PNGs in Inkscape, import them in Axure RP Pro (www.axure.com), a commercial prototyping tool, make areas clickable and create an HTML Dummy.

It would be great to bypass this step for simple click-interaction prototypes, by having a Inkscape function to place a link in the form

<svg width="100" height="30" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" >
     <a xlink:href="http://www.inkscape.de" xlink:type="simple">
          <text font-family="SansSerif" x="0" y="20">Go to Inkscape</text>
     </a>
</svg>

via a simple GUI function. Like this I (and many other ixds/ui designers / IAs) could create interactive SVG prototypes using just Inkscape and use an SVG capable browser to run the user test sessions and demos.