CRT Unit
                           DirectVideo Variable

  DECLARATION:  VAR DirectVideo : Boolean;

      PURPOSE:  Enables/Disables direct video memory writes

      DEFAULT:  TRUE

      REMARKS:  When enabled (TRUE), calls to Write and WriteLn on
                files associated with the CRT will store characters
                directly into the video memory.  When disabled (FALSE),
                calls to Write and WriteLn will be handled through BIOS
                calls, which are much slower.

                A call to TextMode will reset this to its default state.