The full set of HP-UX manuals and the full set of X11 manuals are right next to me on the shelf. I have fond memories playing the "man game" or the "reverse ma

The full set of HP-UX manuals and the full set of X11 manuals are right next to me on the shelf. I have fond memories playing the "man game" or the "reverse man game". In the former, player one calls out the name of a UNIX command, and player two needs to recite the one-line description. In the latter, player one reads out the description and player to needs to guess which command is thus described. While the UNIX manuals (section 3 (API) and especially section 1 (commands)) are well-used, I admittedly didn't use the X11 set as often: the most-used page of the X manual set is the one where it says how to set the DISPLAY variable.