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| .nbody.env | Package environment |
| default.code | Set a default external simulation code |
| energy | Mechanical energy of an N-body system |
| nbody | Gravitational N-Body Simulation |
| plot.simulation | Visualize an N-body simulation |
| reset.cm | Move center of mass to the origin |
| run.simulation | Run a direct N-body simulation |
| setup | Initialize N-body simulation |
| setup.3body.periodic | Initialize N-body simulation |
| setup.earth | Initialize N-body simulation |
| setup.ellipse | Initialize N-body simulation |
| setup.halley | Initialize N-body simulation |
| setup.periodic.3body | Initialize N-body simulation |
| setup.pythagoras | Initialize N-body simulation |
| setup.sunearth | Initialize N-body simulation |