ref: 1f137b385181cb6c506055f533c8bee6691ee8a4
dir: /examples/pendulum.orca/
......................................... .# PENDULUM #............................ ......................................... ........U.......E......U................. ................J........................ ...............B.H....................... ................gS....................... ......................................... ......................................... ......................................... ......................................... ......................................... .........................................