"%[ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789.] = " \
"(%d, %d, %d) "
+/*
+-----------------------------------------------------------------------------
+ Tile palette Feb 9, 2022
+
+ [0] . = (71, 108, 108)
+ [1] A = (0, 0, 0) grayshade maps to [1] itself
+ [2] B = (0, 182, 255) maps to [17] or Q for shade of gray
+ [3] C = (255, 108, 0) maps to [18] or R for shade of gray
+ [4] D = (255, 0, 0) maps to [19] or S for shade of gray
+ [5] E = (0, 0, 255) maps to [20] or T for shade of gray
+ [6] F = (0, 145, 0) maps to [27] or 0 for shade of gray
+ [7] G = (108, 255, 0) maps to [22] or V for shade of gray
+ [8] H = (255, 255, 0) maps to [23] or W for shade of gray
+ [9] I = (255, 0, 255) maps to [24] or X for shade of gray
+ [10] J = (145, 71, 0) maps to [25] or Y for shade of gray
+ [11] K = (204, 79, 0) maps to [26] or Z for shade of gray
+ [12] L = (255, 182, 145) maps to [21] or U for shade of gray
+ [13] M = (237, 237, 237) grayshade maps to [15] or O for shade of gray
+ [14] N = (255, 255, 255) grayshade maps to [13] or M for shade of gray
+ [15] O = (215, 215, 215) grayshade maps to [14] or N for shade of gray
+ [16] P = (108, 145, 182) maps to [14] or N for shade of gray
+ [17] Q = (18, 18, 18) grayshade maps to [1] or A for shade of gray
+ [18] R = (54, 54, 54) grayshade maps to [17] or Q for shade of gray
+ [19] S = (73, 73, 73) grayshade maps to [18] or R for shade of gray
+ [20] T = (82, 82, 82) grayshade maps to [19] or S for shade of gray
+ [21] U = (205,205,205) grayshade maps to [20] or T for shade of gray
+ [22] V = (104, 104, 104) grayshade maps to [27] or 0 for shade of gray
+ [23] W = (131, 131, 131) grayshade maps to [22] or V for shade of gray
+ [24] X = (140, 140, 140) grayshade not mapped in graymappings
+ [25] Y = (149, 149, 149) grayshade not mapped in graymappings
+ [26] Z = (195, 195, 195) grayshade not mapped in graymappings
+ [27] 0 = (100, 100, 100) grayshade not mapped in graymappings
+ [28] 1 = (72, 108, 108) not mapped in graymappings
+-----------------------------------------------------------------------------
+*/
+
static int grayscale = 0;
/* grayscale color mapping */
static const int graymappings[] = {