Pre-defined constant flags for STARTDISP

 Functions
  If the flags are set they mean the following:

   FCL   Force line counting display
   FNS   Force non-stop display
   NC    Re-start the display using current display mode

 Value
  FCL = 2 = 10b = 2o = 2h
  FNS = 1 = 1b  = 1o = 1h
  NC  = 0 = 0b  = 0o = 0h

 Remarks
  STARTDISP takes a single argument to start displaying information in a
  certain format as follows:

  FCL   Tells PCBoard to count lines and pause as needed during the
        display of information.

  FNS   FNS tells PCBoard to not stop during the display of information.

  NC    NC instructs PCBoard to start over with the last specified mode
         (FCL or FNS).

 Examples

  FCL:
  INTEGER i
  STARTDISP FCL
  FOR i = 1 to 100
   PRINTLN "This is line ",i
  NEXT

  FNS:
  INTEGER i
  STARTDISP FNS
  FOR i = 1 to 100
   PRINTLN "This is line ",i
  NEXT

  NC:
  INTEGER i,j
  STARTDISP FCL
  FOR i = 1 TO 5
   STARTDISP NC
   FOR j = 1 to 50
    PRINTLN "This is line ",j
   NEXT
  NEXT