#define truncation_width 8
#define truncation_height 16
static unsigned char truncation_bits[] = {
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x24, 0x42, 0xff, 0x42, 0x24, 0x00,
   0x00, 0x00, 0x00, 0x00 };