>> The Fedora system I have access to lacks /usr/share/doc/groff > Fedora defaults to loading only the package "groff-base" so that man pages can be displayed. To actually use groff for any other purpose, the packages "groff", "groff-doc", "groff-perl", and "groff-X11" have to be installed. Annoying, but there it is. That explains all. Thanks. doug