This program uses a 16 character set. 0=0000 1=0001 etc, it is the hex number to binary. Google it if you're not sure. A=1010 B=1011 C=1100 D=1101 E=1110 F=1111 It is used like this: "(hex string here, length of 16 = a 8x8 tile":prgmSPRITE