These are the system internal variables, which are valid all the
 time.

 G4C.PORT        Gui4Cli's port name (normally Gui4Cli)
 G4C.VERSION     Gui4Cli version number => version 3.0 = 30
 G4C.BUFFERS     The buffer size - (see the  Set  command)
 G4C.LOADED      No of guis loaded
 G4C.OPEN        number of guis whose window is currently open
 G4C.DIR         current directory
 G4C.FAIL        current failat level
 G4C.DEFSCREEN   The screen name which all guis get (default = '*')
 G4C.OUTPUT      The default console output spec
 G4C.FILEPATTERN The default ASL requester file pattern
 G4C.EDITOR      The default editor name (c:Ed)
 G4C.GUIPATTERN  The dafault gui extension (#?.gc - for the requester)
 G4C.GUILOADDIR  The dir that the G4C load requester will open at
 G4C.TAB         The current tab setting (default=8)
 G4C.GRID        The current grid size
 G4C.LVFILL      1=Draw the listview fill-in box at bottom, 0=don't
 G4C.NOVOL       1=Do not show volumes in device list, 0=Show them
 G4C.MARGINS     Returns 3 numbers "SideMargin TopMargin OffSet" 
 G4C.TBMARGINS   Returns 2 numbers (xTextBox margins) "Horz Vert"
 G4C.LVSORT      0=Normal, 1=Date, 2=Ssize, 3=Extension