colors                  Various color palettes.
correlation             Correlation matrices.
enum                    Enumerate items in an object.
ln                      Logarithms.
nr                      Convenience functions for rows or columns
                        manipulations.
panels                  More panel plots.
panels.diag             More univariate panel plots.
pcomp                   Principal Components Analysis.
timing                  Timing of R expressions.
vectorplot              Plot vectors inside a unit circle (PCA loadings
                        or correlations plots).
