ref: 0988bf235dbea9eb64e3d6d7e26bc1a35a1c81c1
dir: /examples/pendulum.orca/
......................................... .# PENDULUM #............................ ......................................... ........U.......E......U................. ................J........................ ...............B......................... ................GS....................... ......................................... ......................................... ......................................... ......................................... ......................................... .........................................