HTML Viewer ----------- When viewing HTML files, Geomview checks environment variable $WEBBROWSER and uses this value, if set. If not set, the command `sensible-browser' is used; see its manpage to learn how to configure sensible-browser. PDF Viewer ---------- When viewing PDF files, Geomview checks environment variable $PDFVIEWER and uses this value, if set. If not set, the command `evince' is used. File Locations -------------- Data files are installed in /usr/share/geomview/data. Mathematica ".m" files are installed in /usr/share/geomview/mathematica. Modules are installed in /usr/lib/geomview; modules that require XForms are not included. A couple of the modules have manpages, which can be found in /usr/share/doc/geomview. Code for example modules is located in /usr/share/doc/geomview/examples. Dump Core Now? -------------- If something goes terribly wrong, geomview asks whether to stop with a message such as: > geomview tetra Geomview: internal error: Illegal instruction; dump core now (y/n) [n] ? One common cause for this is if the OpenGL libs are missing, damaged, or mismatched, e.g. http://bugs.debian.org/cgi-bin/bugreport.cgi?archive=no&bug=105488 Please check that you can indeed run some other open GL application, such as glxinfo or glxgears before reporting a problem. -- Steve M. Robbins , Sun, 7 Jun 2015 22:22:14 -0500