true, faking a mouse motion outside screen 0 is clamped onto screen 0.
When the workaround is enabled, we use XWarpPointer() instead of an
XTest fake motion. This isn't perfect but the only real fix requires
patching XTest.
and sending those options to the appropriate client screens.
Currently, two options are supported: halfDuplexCapsLock and
halfDuplexNumLock mark the caps lock and num lock keys,
respectively, as being half-duplex.