ref: df6f9d5aa5b32a24cd24d985e15c19b1dc38002f
dir: /examples/pendulum.orca/
......................................... .# PENDULUM #............................ ......................................... ........U.......E......U................. ................J........................ ...............B......................... ................GS....................... ......................................... ......................................... ......................................... ......................................... ......................................... .........................................