; SETSLICE
;---------------------------------------------------------------
;! Set slice endpoints on the TV interactively
;# VERB TV INTERACTIVE
;-----------------------------------------------------------------------
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;-----------------------------------------------------------------------
SETSLICE  LLLLLLLLLLLLUUUUUUUUUUUU CCCCCCCCCCCCCCCCCCCCCCCCCCCCC
SETSLICE:  Verb to set slice ends with TV cursor & graphics.
          Only input is from TV cursor.
         @          Output adverbs
BLC      @    0.0         4096.0   Pixel location (X,Y,...) in
         @                         image of lower left corner.
TRC      @    0.0         4096.0   Pixel location (X,Y,...) in
         @                         image of upper right corner.
----------------------------------------------------------------
SETSLICE
Type:  Verb
Use:   To set values in the adverbs BLC and TRC using the TV cursor
       with a TV graphics display of the window as it is being set.
       The terminal will issue instructions.  While setting the start
       point (BLC) of the slice for the first time, any button will
       mark the corner and switch to setting the upper right corner of
       the window.  While setting the end point or resetting the start
       point, button A marks the current corner and switches to the
       other corner, buttons B, C and D exit.

       This verb was called TVSLICE until 31DEC00 (then called
       31DEC99).

Adverbs:
  BLC........Bottom left corner of set window in pixelcoordinates:
             output adverb.
  TRC........Upper right corner of set window in pixel coordinates:
             output adverb.
----------------------------------------------------------------
