ref: ef5119a3ae996a59bfef7dfb03a27809c7663e20
dir: /examples/pendulum.orca/
......................................... .#.PENDULUM.#............................ ......................................... ......................................... ......................................... ............U........W.....U............. ....................J.................... ...................B.H................... ....................xS................... ......................................... ......................................... ......................................... ......................................... ......................................... ......................................... ......................................... .........................................