Specifies how characters are stored in a dataset object
TipsAreNames(dataset, tips)TipsAreColumns(dataset, tips)
a matrix or list containing symbols associated with each tip; for example,
a dataset of class phyDat
vector detailing the tips to be selected, whether as their names or numbers corresponding to their rows/columns
an integer vector, listing the tokens associated with each character for each tip in turn - ready to send to FITCH or equivalent C routine
TipsAreColumns
: use if each column in a matrix corresponds to a tip