'''X''' usually refers to the '''X Window System''', currently at Version 11 Revision 6. Hence often also refered to as '''X11''', or '''X11R6'''. This X11 is not to be confused with [MacOS X] which is also often just called "X" by Mac afficionados. [Xlib] is a higher level interface used by most applications to communicate using the X protocol. Tk emulates many Xlib functions on platforms that don't have X11. References * http://www.x.org - X in general * http://www.xfree86.org - XFree implementation of X (servers) * news://comp.windows.x * http://www.faqs.org/rfcs/fyi/fyi6.html - simple overview of papers/standards available (perhaps a bit outdated, as it was written in 1991) * http://www.faqs.org/rfcs/rfc1013.html - X protocol * http://www.xfree86.org/current/specindex.html - XFree collection of specification documents * http://www.visi.com/~grante/Xtut/ - a tutorial for end-users * http://www.visi.com/~grante/Xtut/ - the pertinent Wikipedia page ---- The symbol ''x'' is often used by mathematicians, scientists and engineers to refer to the component of a vector that is parallel to the first axis of the coordinate system (the horizontal one - [RS] remembered the difference in school by considering that Y has a vertical bar, while X hasn't ;). It is also sometimes taken to just refer to something unknown, as in "With added Factor X for extra cleaning power!!!" (Like much of advertising, this is of course nonsense; factors are not things you add, but things by which you multiply!) ---- [[It probably would be useful to tell all kinds of things about X (the window system), 'bout how it's much despised in some circles, how XFree86 is only one nexus for innumerable coups and counter-coups, ...]] ---- [[ [Category Glossary] | [Category GUI] | [Category Desktop] | [Category Application] ]]