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 PALETTE submenu:
 This is a submenu of the FILE menu.
     
     You may change the COLOR PALETTE of an image which is
 already OPENed on the screen, under the FILE menu.  Color
 palettes (also called `color maps') are look-up tables that tell
 the computer monitor what colors to display for any GRAY VALUE
 value.  Palettes can be designed to turn gray images into
 green-tinted or red-tinted images, or even into pseudocolor
 images, in which different gray values are assigned combinations
 of red, green, and blue.  Experiment with viewing your image,
 using different color palettes.  These transformations will not
 alter your actual grayscale data.  The selection of palettes
 includes: AQUA,  BLUE, EMERALD, GREEN, GRAY, RED, INVERTED,
 SPRINKLE, RAINBOW, and EXTREME.
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