#define retr_width 16
#define retr_height 16
static char retr_bits[] = {
   0x00, 0x00, 0x02, 0x00, 0x06, 0x00, 0x0e, 0x00, 0x1e, 0xe0, 0x3e, 0x20,
   0x7e, 0xf8, 0xfe, 0x08, 0xfe, 0x09, 0x3e, 0xfe, 0x36, 0x02, 0x62, 0x72,
   0x60, 0x72, 0xc0, 0x12, 0xc0, 0x12, 0x00, 0x02};