

   LLooggiiccaall VVeeccttoorrss

        logical(n=0)
        as.logical(x)
        is.logical(x)

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

        `logical' creates a logical vector of the specified
        length.  Each element of the vector is equal to
        `FALSE'.

        `as.logical' attempts to coerce its argument to be of
        logical type.

        `is.logical' returns `TRUE' or `FALSE' depending on
        whether its argument is of logical type or not.

