Hi Bob - bottom line: for any remotely-modern OO support, please use make4ht. As I recall, Michal postprocesses the core htlatex output into something usable. Background: Eitan created oolatex (and dblatex for docbook, and mazlatex, probably others). I recall discussing all these variations with him and not wanting to install all these tiny executables. That might be when he documented those invocations. Looking at my TL installations, it seems oolatex and dblatex and mzlatex have never been in TL.
Hope it flies ... -k
