

   TTrraaccee aallll ccaallllss ttoo aa ffuunnccttiioonn..

        trace(fun)
        untrace(fun)

   AArrgguummeennttss::

        fun: any interpreted R function (not quoted).

   DDeessccrriippttiioonn::

        These are both in very primitive form.  If `trace' is
        called the function named is marked and each time it is
        entered the call is printed on the console.  To stop
        tracing a function use `untrace'.

   SSeeee AAllssoo::

        `debug'.

   EExxaammpplleess::

        trace(names)
        data.frame(x=1:2, y=3:4)
        untrace(names)

