The doclifter program translates documents written in troff macros to
DocBook. Lifting documents from presentation level to semantic level
is difficult, and a really good job requires human polishing, but this
tool does about 95% of the work. It aims to do everything that can be
mechanized, and to preserve in XML comments any troff-level
information that might have structural implications. Also includes
manlifter, a driver script that can be used to convert entire
manual-page hierarchies.