With a texmacs document, scheme is the best way to manipulate and extract documents. I hesitate to say, but I feel that the scheme techniques will approach the capabilities of xpath and xlstproc. I will refrain for the rest of the year from mentioning how desirable texmacs would be as a general purpose extensible macro xml editor, combining svg, mathml, xhtml, with xslt and all the rest. I promise! (No more cork, portable document format, subject to xslt manipulation but with texmacs macro goodness - some of which could convert to css) anyway... I dream, but who has the time...there are even various scheme implementations in _javascript_ into which the macro language could be stuffed... ahh...

Sam