Hi Michal > Of course not, I am impressed that you understand it at all. All .4ht > files are generated from literate sources available here: > http://svn.gnu.org.ua/viewvc/tex4ht/trunk/lit/ I'm actually discovered the literate source after a while, but as you say it is largely only structurally literate ... not that many helpful comments inside (if any) that make you understand why this or that has be done in a particular way. So yes I can see why you would normally start from working with the .4ht files frank