#' @param VL Character. The variable list to be processed as a character vector.
#' Depending upon the \code{mode} and the stage of processing:
#' \itemize{
#' \item the lines may be named as "Line_1" etc
#' \item a format code may be present as the first entry
#' \item there may be other non-numeric lines that eventually get stripped off
#' }
#'
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