Quote Originally Posted by ravenx99 View Post
That is, Inkscape can use "image xlink:href=file" to include an SVG file, but it can't do "use xlink:href=file#id" to reference specific objects.
OK. I see how this works now. Thanks for the information.

After some thought it's still easier for me to use php to generate temporary files than to break my existing files down to their separate symbols. I'll post if I find any alternatives.