Internal Program Version: libXevie  1.0.3

libXevie provides an X Window System client interface to the EvIE
extension to the X protocol. The EvIE (Event Interception Extension)
allows for clients to be able to intercept all events coming through
the server and then decide what to do with them, including being able
to modify or discard events.

http://xorg.freedesktop.org