Hi Peter, > Have a look at om.tmac, the macro definition '.de ul*ps'.
http://git.savannah.gnu.org/cgit/groff.git/tree/contrib/mom/om.tmac#n175 OK, so it takes the normal grops definitions, e.g. /Q{moveto show}bind def and replaces them with its own, /Q { moveto X show Y } def where X saves the current place on the page and Y draws a line from there to the new, post-show, place. (Q can't bind the definition since X and Y switch definitions between doing nothing and drawing the line.) One thought, if grops grows some more definitions, it might hit X as it's currently up to T. Perhaps grops should declare a prefix it won't use that's available for the user? Cheers, Ralph.
