INTERNAL VARIABLES
 ====================================================================
 Internal variables tell you various things about the present state
 of the system. You access them by putting a double dollar sign in
 front - ex: $$G4C.PATH. This is a full list of the available vars:

  G4C             Gui4Cli's internal parameters (current dir etc..)
  RetCode         Return code from dos and arexx commands
  RexxRet         Result_2 from arexx
  Call.Ret        Return from a Call command

  Win             Current Gui4Cli window
  Screen          Screen of current window
  Gad             Current (most recently selected) gadget
  Mouse           Mouse coordinates etc
  Palette         Current Palette gadget
  LV              Current Listview
  TextIn          Current TextIn gadget
  Image           Image information
  Help            For the xOnHelp event

  Parse           Results of ParseVar command
  Key             RawKey & VanKey values
  Search          Results from the SearchVar and LVSearch commands

  Sys             Info on the system (active window title etc)
  Rand            Random number generator
  Mem             Memory information

  Files           Info on a given file
  Variables       Info on a given variable

  Obsolete        Forget them..