#define box_width 18
#define box_height 18
static char box_bits[] = {
  0xC0, 0xFF, 0x03, 0xC0, 0xFF, 0x03, 0x30, 0xC0, 0x03, 0x30, 0xC0, 0x03, 
  0x0C, 0x30, 0x03, 0x0C, 0x30, 0x03, 0xFF, 0x0F, 0x03, 0xFF, 0x0F, 0x03, 
  0x03, 0x0C, 0x03, 0x03, 0x0C, 0x03, 0x03, 0x0C, 0x03, 0x03, 0x0C, 0x03, 
  0x03, 0x0C, 0x03, 0x03, 0x0C, 0x03, 0x03, 0xCC, 0x00, 0x03, 0xCC, 0x00, 
  0xFF, 0x3F, 0x00, 0xFF, 0x3F, 0x00, };