ref: 7203f8443e5f71b78a406833bb9a6bebf886ac93
dir: /examples/misc/echoes.orca/
......................................... .#.ECHOES.#.............................. ......................................... .22O..................................... .aV.22O.................................. .......22O............................... ..........22O............................ .............22O......................... ................22O...................... ...................22O................... ......................22O................ .........................22O............. ............................22O.......... .................................Va...... .................................1....... .........................................