ref: 2fee3a706bfe582c872a18360d16946329846584
dir: /examples/pendulum.orca/
......................................... .#.PENDULUM.#............................ ......................................... ......................................... ......................................... ............U........W.....U............. ....................J.................... ...................B.H................... ....................xS................... ......................................... ......................................... ......................................... ......................................... ......................................... ......................................... ......................................... .........................................