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