#' Persistence Forecaster
#'
-#' Return the last centered (similar) day curve.
-#' Inherits \code{\link{Forecaster}}
+#' Look for the most recent similar day in the past, and return its corresponding curve.
+#' "Similar day" means "same day in the week".
+#'
+#' @format R6 class, inherits Forecaster
+#' @alias F_Persistence
#'
PersistenceForecaster = R6::R6Class("PersistenceForecaster",
inherit = Forecaster,