On systems supporting depth greater than 8, this will likely be TrueColor . On systems with only 8-bit hardware, PseudoColor will be searched for. Should the search for PseudoColor and StaticColor fail on an 8-bit system, the program will abort. This option has no effect when the program has selected a non-default visual, because in this case it will create its own colormap anyway. It may be useful though on an 8-bit system with an almost full standard PseudoColor default palette, when the image rendering procedures fail to allocate 6x6x6 color cube.
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A standard X11 option that allows you to redirect the graphical output to a specific display. Displays option information.