#define marker_width 16
#define marker_height 16
static char marker_bits[] = {
   0x0f, 0x78, 0x03, 0x60, 0x05, 0x50, 0x09, 0x48, 0xf0, 0x07, 0x10, 0x04,
   0x10, 0x04, 0x90, 0x04, 0x10, 0x04, 0x10, 0x04, 0xf0, 0x07, 0x09, 0x48,
   0x05, 0x50, 0x03, 0x60, 0x0f, 0x78, 0x00, 0x00};
