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─────Run-Time Library───────────────────────────────────────────────────────
 
     The _remapallpalette function remaps the entire color palette
     simultaneously to the colors given in the <colors> array. The
     <colors> array is an array of long integers where the size of the
     array varies from 16 to 64 to 256, depending on the video mode.
 
     The number of colors mapped depends on the number of colors
     supported by the current video mode. The _remapallpalette function
     works in all video modes (except _ORESCOLOR mode), but only with
     EGA, MCGA, VGA, or SVGA hardware.
 
     The first array element specifies the new color value to be
     associated with color index 0 (the background color in graphics
     modes). After the call to _remapallpalette, calls to _setcolor
     will index into the new array of colors. The mapping done by
     _remapallpalette affects the current display immediately.
 
     The <colors> array can be larger than the number of colors
     supported by the current video mode, but only the first <n>
     elements are used, where <n> is the number of colors supported by
     the current video mode, as indicated by the <numcolors> element
     of the _videoconfig structure.
     See: _videoconfig
 
     The default color assignments of the color indexes and an
     explanation of specifying a color with a long value are provided
     on a separate screen.
     See: ◄Graphic Mode Colors►
 
     The _remapallpalette and _remappalette functions do not affect the
     presentation-graphics palettes, which are manipulated with the
     _pg_getpalette, _pg_setpalette, and _pg_resetpalette functions.
 
     Return Value
 
     If successful, _remapallpalette returns a nonzero value (short).
     In case of an error, _remapallpalette returns 0 (short).
 
     If successful, _remappalette returns the color value previously
     assigned to <index>, or -1 if the function is inoperative (not
     EGA, VGA, SVGA, or MCGA), or if the color index is out of range.
 
     Note that _remapallpalette returns a short value and _remappalette
     returns a long value.
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