Getting XWiki to fetch an outside page for display in a wiki doc?

I know that there are lots of ways to do this, but I'd like to know if anyone has a simple way to display all or part of an arbitrary page in an XWiki document. I don't have a really concrete example at the moment, but things I have wanted to do in the past involve such things as: - putting a display on users' profile pages of their company directory lookup page (which is not in the wiki), either included directly (not so nice) or dissected so that its DOM elements can be extracted and the desired ones reformatted as a part of the page (much better) - posting a table of contents for a reference document, or a table within it, so that I can link directly to the heading or table entry and users need not go to the document and search for the specific information - without having to code each reference by hand, of course I'm pretty sure I know how, using either Javascript or the Java DOM methods supplied with XWiki, to parse and display the information when I get it, but how to go about getting XWiki to fetch the included document seems to escape me. I know that various things such as the feed plugin do this, and I'll probably go to the source to learn how if I don't get an easier answer. But I hope that someone has done this already and has found an easy way to do it. brain[sic]