; TVMBLINK
;---------------------------------------------------------------
;! Verb which blinks 2 TV planes either auto or manually
;# VERB TV
;-----------------------------------------------------------------------
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;;
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;-----------------------------------------------------------------------
;---------------------------------------------------------------
TVMBLINK  LLLLLLLLLLLLUUUUUUUUUUUU CCCCCCCCCCCCCCCCCCCCCCCCCCCCC
TVMBLINK: Verb which blinks 2 TV planes either auto or manually
TVCHAN          0.0        43.0    TV channel(s) selection
                                     Two-decimal coded #
                                     < 12  =>  21
          In blink mode (either auto or manual):
            Cursor X gives rate, cursor Y gives ratio, button A
            switches between images, button B selects auto
            blinking, button C selects enhance both images, and
            button D exits.
          In enhancement mode:
            Cursor X gives intercept, cursor Y gives slope, and
            button C reverses sign of slope.  Buttons A and B
            select which individual channel to enhance and
            button D returns verb to blink mode.
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TVMBLINK
Type:  Verb
Use:   To compare images on 2 planes of the TV by blinking them.
       While auto-blinking: the cursor X position controls the
       blink rate and cursor Y position controls the proportion
       of time spent on each plane.  In auto or manual blink
       modes: button A selects manual mode and the next channel,
       button C selects auto-blinking, button B selects image
       enhancement of both images together,  and button D causes
       the verb to exit.  During the image enhancement, the left
       hand half of channel A appears with the right hand half
       of channel B on the TV screen.  In this mode, the cursor
       X position controls the intercept and the cursor Y
       position controls the slope of the (linear) transfer
       function.  Buttons A and B may be used to select channels
       A and B, resp., for individual enhancement.  Button C
       will switch the sign of the slope and Button D will
       return the verb to the blinking mode.
Adverbs:
  TVCHAN.....Selects which channel is "channel A" and "channel
             B" as 10 times # of channel B plus # of channel A.
             If TVCHAN < 12, the verb uses 21.  On TVs which
             support split screen, channel A will appear on the
             left (or top) half during enhancement functions.
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