itcl:     Inherited Tcl                                                    [OPT]
tclx:     Tcl Extended                                                     [OPT]
xbitmap:  bitmap program                                                   [OPT]
xextra20: more X-windows stuff                                             [OPT]
xvow35:    binaries and support files for the Openlook window-manager      [OPT]
zxfix:    miscelaneous fixes and patches for SLS                           [IMP]