write.tree(phy, file = "", append = FALSE, format = "Newick",
multi.line = TRUE)"phylo".file = "" (the default) then the
tree is written on the standard output connection (i.e. the console).TRUE the tree is appended to the file
without erasing the data possibly existing in the file, otherwise
the file (if it exists) is overwritten (FALSE the default)."Newick". Currently only "Newick" is
available.TRUE (the default) line breaks
are introduced in the tree in parenthetic form.file = "", none (invisible
`NULL') otherwise. Olsen, G. Interpretation of the "Newick's 8:45" tree format standard.
read.tree, read.nexus,
write.nexus