Well, if people would ship the original format (e.g. TeX) files we could build tools. However, I find that pdf, while readable everywhere, is a write-only format (similarly ps, doc, and other "end" formats). TeX has the advantage that it can be converted to almost anything else, including html. And, if all else fails you can read the TeX directly, thus being the equivalent of source code. Shipping pdf is shipping binaries. One man's opinion. Tim
