ref: 3a5d0c916ea11900852099871e2f492eb1aded6c
dir: /examples/pendulum.orca/
......................................... .#.PENDULUM.#............................ ......................................... ......................................... ......................................... ............U........W.....U............. ....................J.................... ...................B.H................... ....................xS................... ......................................... ......................................... ......................................... ......................................... ......................................... ......................................... ......................................... .........................................