I see. The point is that oolatex is not installed by TeXLive 2009 and that it is hard to find in the docu that you always have the opportunity to use mk4ht. Updating the T4HT doc is not an easy thing to do. When we get that far, there will be plenty of things to update, I'm sure, including the pared-down list of commands now in TL. Thanks, k