#define pencil_width 18
#define pencil_height 18
static char pencil_bits[] = {
  0x00, 0xF0, 0x00, 0x00, 0xF0, 0x00, 0x00, 0x0C, 0x03, 0x00, 0x0C, 0x03, 
  0x00, 0x33, 0x03, 0x00, 0x33, 0x03, 0xC0, 0xC0, 0x00, 0xC0, 0xC0, 0x00, 
  0x30, 0x30, 0x00, 0x30, 0x30, 0x00, 0x0C, 0x0C, 0x00, 0x0C, 0x0C, 0x00, 
  0x03, 0x03, 0x00, 0x03, 0x03, 0x00, 0xC3, 0x00, 0x00, 0xC3, 0x00, 0x00, 
  0x3F, 0x00, 0x00, 0x3F, 0x00, 0x00, };