\code{cbind}, and \code{[}.
}
\references{
- Paradis ,E. (2007) A Bit-Level Coding Scheme for Nucleotides.
+ Paradis, E. (2007) A Bit-Level Coding Scheme for Nucleotides.
\url{http://pbil.univ-lyon1.fr/R/ape/misc/BitLevelCodingScheme_20April2007.pdf}
}
\author{Emmanuel Paradis \email{Emmanuel.Paradis@mpl.ird.fr}}