ref: 764516f089f65cd15f474f9fc84f5d495a9f8d41
dir: /examples/pendulum.orca/
......................................... .# PENDULUM #............................ ......................................... ........U.......E......U................. ................J........................ ...............B.H....................... ................gS....................... ......................................... ......................................... ......................................... ......................................... ......................................... .........................................