ref: 84a4ce4f7aab51c82b94f32f6b1e678b35f7b907
dir: /examples/pendulum.orca/
......................................... .# PENDULUM #............................ ......................................... ........U.......E......U................. ................J........................ ...............B......................... ................GS....................... ......................................... ......................................... ......................................... ......................................... ......................................... .........................................