If several trees are read in the file, the returned object is of class
\code{"multiPhylo"}, and is a list of objects of class \code{"phylo"}.
-
- An attribute \code{"origin"} is further given to the returned object
- which gives the name of the source file (with its path). This is used
- to write a tree in a NEXUS file where all the original data must be
- written (not only the tree) in accordance to the specifications of
- Maddison et al. (1997).
}
\references{
Maddison, D. R., Swofford, D. L. and Maddison, W. P. (1997) NEXUS: an