Specifies the time. You can pass either a timestamp or CurrentTime . Otherwise, the last-change time is set to the specified time, with CurrentTime replaced by the current server time. Otherwise, the owner of the selection becomes the client executing the request. The selection atom is uninterpreted by the X server.
Selections are global to the X server.
Diagnostics BadAtom A value for an Atom argument does not name a defined Atom. BadWindow A value for a Window argument does not name a defined Window.