Werner, I have a couple of minor improvements to the MathML patch; notably, I've fixed a minor bug in the handling of inline equations and another that attached an incorrect attribute to <mfrac>. Would you prefer to receive an incremental patch or a rollup?
Not having write access to the CVS is starting to be a pain. Teaching doclifter to use groff -TMathML has gone mostly quite smoothly, but there turns out to be one nasty little issue. A couple of man pages embed numeric troff highlight escapes like \f2 in eqn formulas. It's not at all clear what to do with these when generating MathML. Any suggestions? -- <a href="http://www.catb.org/~esr/">Eric S. Raymond</a>