cnvtools: What the package does (short line)

##' Segmented data from the 304 CNV samples of the PETACC3 set
##'
##' A dataset containing 67097 rows and 6 columns. Each row
##' corresponds to a segment. The columns contein the following
##' information:
##' \itemize{
##'   \item ID. The sample identifier (colnames of the CNV matrix)
##'   \item chrom. The chromosome where the segment is found. Note
##'   all the chromosomes are numeric (X = 23, Y = 24).
##'   \item loc.start. Start position of the segment.
##'   \item loc.end. End position of the segment.
##'   \item num.mark. Number of markers falling in the segment.
##'   \item seg.mean. Log-ratio mean value of the segment.
##' @docType data
##' @keywords datasets
##' @name Segments
##' @format a data frame with 67097 rows and 6 columns
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