There might be something in extended (ISO) character set that would work, but I'm not terribly familiar with those so far. A broader question revolves around support for images on Wikipedia--many of us could probably draw diagrams that would enrich the content of pages, like the chemistry-related pages, dramatically. We could develop them and release them under GDFL terms, and it would seem a shame to limit their availability and redistribution to off-Wiki linking. I mean, after all, dead-tree encyclopedias and even some dictionaries have illustrations. It's an interesting challenge, working within the confines of a primarily-text medium (Lynx is my primary browser, after all), but at some point, the *pedias should support pictures.0