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## XorValue

`XorValue` [`number`]

Changes the value with which bits are xor'ed when doing rubber-band window moving or resizing. Valid values range from zero to the maximum value of an unsigned long integer on your system. Setting this value is a trial-and-error process. The default value 0 tries to find a value that gives a good contrast to black and white. The default value is used if the given `number` is omitted or invalid.

fvwm 2.6.8