Low level utility functions Basic functions for data manipulation and other low level tasks.
strHead	Function that takes first n characters from a (vector of) character string(s)
strTail	Function that returns the last n characters from a (vector of) character string(s)
Higher level/statistical modelling functions Nothing here yet, really. But I'll reference strHead anyway.
strHead	Function that takes first n characters from a (vector of) character string(s)