libXdmcp: libXdmcp (X Display Manager Control Protocol library) libXdmcp: libXdmcp: libXdmcp is part of X11. libXdmcp: libXdmcp: For more information about the X.Org Foundation (the providers of the libXdmcp: X.Org implementation of the X Window System), see their website: libXdmcp: libXdmcp: http://www.x.org libXdmcp: libXdmcp: libXdmcp: