X              XGC            XScreenType    XShm           XtC  
XAtomQueue     XImUtil        XScrnCmap      XTrestle       XtE  
XClient        XInput         XScrnCrsr      Xatom          XtN  
XClientExt     XMachine       XScrnFont      Xaw            XtR  
XClientF       XMessenger     XScrnPntOp     Xct            XtermModel  
XConfCtl       XPaint         XScrnPxmp      Xmbuf          
XCursors       XParam         XScrnTpRep     Xmu            
XEventQueue    XPicture       XScrollQueue   Xrm            
XExtensions    XProperties    XSharedMem     Xt