#' @param runCmd boolean: indicates command line should be executed.
#' @param saveCmd boolean: indicates command line should be written to a file.
#' @param cmdFile character: contains the name of the file to which commands
#' should be written.
#' @param cmdClear boolean: indicates file for commands should be deleted (cleared) before the command
#' line is written.
#' @param echoCmd boolean: indicates command line should be displayed.
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