Definition: x2x: Link two X displays together, simulating a multiheaded display x2x joins a pair of X displays together, as if they were a single multiheaded display. The pointer can be warped between displays, or, depending on how you start x2x, can slide from one display to the other when it runs off the edge of the screen. Keyboard focus also moves between displays in the way you'd expect, and the X selection propagates around.


At least one of the displays involved (specifically, the one being controlled remotely) must support the XTEST extension. (The servers shipped by Debian support this.) x2x is useful when you have two displays on the same desk, as you can use a single keyboard and mouse to control both. If you want to propagate your selections between displays which are not sharing a desk, you might be more interested in the package propsel. Propsel does not link the displays' keyboard and mouse, which would be confusing in some cases, and can propagate between up to 8 displays, whereas x2x can handle only two at a time.

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Source: Debian 3.0r0 APT / Linux Dictionary V 0.16
http://www.tldp.org/LDP/Linux-Dictionary/html/index.html
Author: Binh Nguyen linuxfilesystem(at)yahoo(dot)com(dot)au
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