%N grsci %F $MIR/src/grsci.f
%D Set color index
%B
      SUBROUTINE GRSCI (IC)

 GRPCKG: Set the color index for subsequent plotting. Calls to GRSCI
 are ignored for monochrome devices. The default color index is 1,
 usually white on a black background for video displays or black on a
 white background for printer plots. The color index is an integer in
 the range 0 to a device-dependent maximum. Color index 0 corresponds
 to the background color; lines may be "erased" by overwriting them
 with color index 0.

 Color indices 0-7 are predefined as follows: 0 = black (background
 color), 1 = white (default), 2 = red, 3 = green, 4 = blue, 5 = cyan
 (blue + green), 6 = magenta (red + blue), 7 = yellow (red + green).
 The assignment of colors to color indices can be changed with
 subroutine GRSCR (set color representation).

 Argument:

 IC (integer, input): the color index to be used for subsequent
       plotting on the current device (in range 0-255). If the
       index exceeds the device-dependent maximum, the result is
       device-dependent.
