- For \code{cbind}, if \code{"check.names = TRUE"}, the rownames of each
- matrix are checked, and the rows are reordered if necessary. If the
- rownames differ among matrices, an error occurs. If
- \code{"check.names = FALSE"}, the matrices are simply binded and the
- rownames of the first matrix are used.
+ For \code{cbind}, the default behaviour is to keep only individuals
+ (as indicated by the rownames) for which there are no missing data. If
+ \code{fill.with.gaps = TRUE}, a `complete' matrix is returned,
+ enventually with insertion gaps as missing data. If \code{check.names
+ = TRUE} (the default), the rownames of each matrix are checked, and
+ the rows are reordered if necessary. If \code{check.names = FALSE},
+ the matrices must all have the same number of rows, and are simply
+ binded; the rownames of the first matrix are used. See the examples.