This is incredibly clever. In case anyone else is confused by the order: the ASCII codes for L, S, R are 76, 83, 82 respectively, so L encodes i and R encodes -

This is incredibly clever. In case anyone else is confused by the order: the ASCII codes for L, S, R are 76, 83, 82 respectively, so L encodes i and R encodes -i as you’d expect.