#define pencil_width 16
#define pencil_height 16
static short pencil_bits[] = {
   0x0000, 0x0000, 0x1000, 0x3800,
   0x1c00, 0x0a00, 0x0500, 0x0280,
   0x0140, 0x00a0, 0x0050, 0x0028,
   0x0014, 0x000c, 0x0002, 0x0000};
