

   SSttoopp FFuunnccttiioonn EExxeeccuuttiioonn

        stop(message)

   DDeessccrriippttiioonn::

        `stop' stops execution of the current expression,
        prints the message given as its argument and then
        returns to the top level prompt.

   SSeeee AAllssoo::

        `warning'.

   EExxaammpplleess::

        if(iter > 10) stop("too many iterations")

