ref: e3a979ce631b8a32dd75280d2fae889b10cc0eec
dir: /examples/subtraction.orca/
......................................... .#.SUBTRACTION.#......................... ......................................... .13X9.#.A.#.............................. .01X4.#.B.#.............................. ......................................... ...4zT0zyxwvutsrqponmlkjihgfedcba98765432 ...A9w................................... .rV5..................................... ............Vr........................... .#.RESULT.#.5............................ ......................................... ......................................... ......................................... ......................................... .........................................