Random adages, quotes and fortunes

The X Window System:
  The standard UNIX graphical environment.  With Linux, this is usually
  XFree86 (http://www.xfree86.org).  You may call it X, XFree, the X
  Window System, XF86, or a host of other things.  Call it 'XWindows' and
  someone will smack you and you will have deserved it.