| eppet | Optimizes the Entropy index. |
| eppft | Optimizes the Friedman-Tukey index. |
| eppher | Optimizes the Hermite index |
| eppleg | Optimizes the Legendre index. |
| eppnh | Optimizes the Hermite index. |
| givenrot | Decomposes an orthonormal matrix into a set of rotations by Givens rotation |
| indexentropy | computes the Entropy index via kernel density estimation |
| indexfriedmantukey | computes the Friedman Tukey index via kernel density estimation |
| indexhermite | computes the Hermite index via kernel density estimation |
| indexlegendre | computes the Legendre index via kernel density estimation |
| indexnaturalhermite | computes the Natural Hermite index via kernel density estimation |
| plotgt | Interactive grand tour and projection pursuit methods of a multivariate dataset. |
| ppmain | Generates constants and loads all libraries necessary for pp. |
| pptest | Tests the macros of the pp library. |
| tourasimov | Computes a rotation matrix based on the paper by Asimov (1985). |
| tourlittle | Computes a little tour rotation matrix. |
| tourrandom | Computes a random rotation matrix. |