A NULL value in the case of \code{summary}, a single numeric value for
the three other functions.
}
-\author{Emmanuel Paradis \email{Emmanuel.Paradis@mpl.ird.fr}}
+\author{Emmanuel Paradis}
\seealso{
\code{\link{read.tree}}, \code{\link[base]{summary}} for the generic R
- function
+ function, \code{\link{multiphylo}}, \code{\link{c.phylo}}
}
\examples{
data(bird.families)