

   LLiissttss

        list(...)
        as.list(x)
        is.list(x)

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

        The arguments to `list' are of the form `value' or
        `tag=value'.  The function returns a list composed of
        its arguments with each value either tagged or
        untagged, depending on how the argument was specified.

        `as.list' attempts to coerce its argument to list type.

        `is.list' returns `TRUE' if its argument is a list and
        `FALSE' otherwise.

        To create an empty list it is necessary to use the
        function `vector' with a `mode' of `"list"'.

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

        `vector'.

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

        data(cars)
        # create a plotting structure
        pts <- list(x=cars[,1], y=cars[,2])
        plot(pts)

