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color.gle

Color subroutines

sub color_range_horizontal zmin zmax zstep palette$ width height format$ pixels
draws a horizontal color range

sub color_range_vertical zmin zmax zstep palette$ width height format$ pixels
draws a vertical color range

sub palette_blue_white_red z
sub palette_blue_purple_red z
sub set_palette_shade_gray_fade fade
sub set_palette_shade_gray_color red green blue
sub sgp_color z x
sub palette_shade_gray z