update documentation

Author: alexg9010

R/methSeg.R

@@ -49,6 +49,16 @@
 #' @details      
 #'        To be sure that the algorithm will work on your data, 
 #'        the object should have at least 5000 records
+#'        
+#' @details After initial segmentation with fastseg(), segments are clustered 
+#'        into self-similar groups based on their mean methylation profile 
+#'        using mixture modeling. Mixture modeling estimates the initial 
+#'        parameters of the distributions by using the whole dataset. 
+#'        If "initialize.on.subset" argument set as described, the function 
+#'        will use a subset of the data to initialize the parameters of the 
+#'        mixture modeling prior to the Expectation-maximization (EM) algorithm 
+#'        used by \code{\link{Mclust}} package.
+#'  
 #' @examples 
 #' 
 #' \donttest{