--- /dev/null
+#define undo_width 18
+#define undo_height 18
+static unsigned char undo_bits[] = {
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x95, 0x8e, 0x01, 0x95, 0x52, 0x02, 0xb5, 0x52, 0x02, 0xd5, 0x52, 0x02,
+ 0x95, 0x52, 0x02, 0x97, 0x8e, 0x01, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00,
+ 0x00, 0x80, 0x00, 0xfe, 0xff, 0x01, 0x00, 0x00, 0x00, 0xfe, 0xff, 0x01,
+ 0x04, 0x00, 0x00, 0x08, 0x00, 0x00};