#define undo_width 19
#define undo_height 18
static unsigned char undo_bits[] = {
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x18, 0x1f, 0x00,
   0xb8, 0x7f, 0x00, 0xf8, 0xff, 0x00, 0xf8, 0xf1, 0x00, 0xf8, 0xe0, 0x01,
   0xf8, 0xc1, 0x01, 0xf8, 0xc3, 0x01, 0x00, 0xc0, 0x01, 0x00, 0xc0, 0x01,
   0x00, 0xe0, 0x01, 0x00, 0xf0, 0x00, 0x80, 0x7f, 0x00, 0x80, 0x3f, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };