-#' Return the (pointwise) average of the all the (similar) centered day curves
-#' in the past. Inherits \code{\link{Forecaster}}
+#' Pointwise average of all the series of the same day of week in the past.
+#'
+#' For example, if the current day (argument "today") is a tuesday, then all series
+#' corresponding to tuesday in the past (until the beginning or memory limit) -- and in
+#' the future if 'opera' is FALSE -- are averaged to provide a smooth prediction. This
+#' forecast will most of the time be wrong, but will also look plausible enough.
+#'
+#' @usage # AverageForecaster$new(pjump)
+#'
+#' @docType class
+#' @format R6 class, inherits Forecaster
+#' @aliases F_Average