                                                                recall

Chapter 9 Input Modes

recall

    Activates the recall mode.
     
         recall shape [b]

    Activates the graphics input recall mode.   This mode will read the raster
    as stored in the temp file the last time and return all pixels in the
    chosen shape to their former status (on or off).  Its use is to repair
    operator mistakes, similar to the undo command.  Use start to begin
    recalling a shape and continue for all subsequent vertices for that shape.
    Then, use start to begin another object.  Note that the current mode/action
    is displayed in the upper-left window of the screen.
    ___________________________________________________________________________
    Options/arguments:

         shape     Shape type, including:
              point               (single pixel)
              line                (pixel unit width)
              fat_line            (3-pixel width)
              arectangle          (area; includes center area)
              brectangle          border; does not incl center)
              wedge               (walking triangle)
              separate            (same area as separate mode)
              connect             (same area as connect mode)

			b    (optional) if present:  recall from the braster (original scan), 
                                      not the edited raster.
    ___________________________________________________________________________
    Example(s):

    To invoke the recall fat_line draw mode starting with a position defined as
    x=456 and y=222, enter:

         recall fat_line
         start 456 222

    To continue the recall fat_line mode at a position defined as x=488 and
    y=225, enter:
     
         continue 488 225
     
    To remain in the recall fat_line mode while moving, but not recalling, to a
    new position defined as x=500 and y=236, enter:
     
         start 500 236
     

    To invoke the recall arectangle mode starting at the position defined as
    x=790 and y=345 from the original scan (braster), enter:

         recall arectangle b
         start 790 345

    To re-position the starting position of the rectangle to x=690 and y=345,
    enter (prior to any continue commands):
     
         start 690 345
     
    To complete the rectangle recall action to encompass the rectangular  area
    bounded by 690,345 and 700,390 (lower-left and upper-right   corners; any
    two, diagonally-opposed positions will suffice), enter:

         continue 700 390
     
    Note that the recall brectangle command recalls only a unit_width perimeter
    of the defined rectangular area.  The recall arectangle  command recalls
    the entire rectangular area, not just the perimeter.

    To exit the recall mode, enter:
     
         clear_mode
     
    or enter a new graphics input mode.
    ___________________________________________________________________________
    See also:

              clear_mode, continue, erase, start
    ___________________________________________________________________________
