ref: 376003a4b40a2adc25e9e76bc3fda2b1fac8fdfe
dir: /examples/pendulum.orca/
......................................... .# PENDULUM #............................ ......................................... ........U.......E......U................. ................J........................ ...............B......................... ................GS....................... ......................................... ......................................... ......................................... ......................................... ......................................... .........................................