ref: 5ba56ca67baae3db140f8b7a2b2fc46bbac5602f
dir: /examples/misc/echoes.orca/
......................................... .#.ECHOES.#.............................. ......................................... .22O..................................... .aV.22O.................................. .......22O............................... ..........22O............................ .............22O......................... ................22O...................... ...................22O................... ......................22O................ .........................22O............. ............................22O.......... .................................Va...... .................................1....... .........................................