

   DDeebbuugg aa ffuunnccttiioonn

        debug(fun)
        undebug(fun)

   AArrgguummeennttss::

        fun: any interpreted R function.

   DDeessccrriippttiioonn::

        These functions set and unset the debugging flag on a
        function.  When a function flagged for debugging is
        entered, normal execution is suspended and the body of
        function is executed one statement at a time.  A new
        browser context is initiated for each step (and the
        previous one destroyed).  Currently you can only debug
        functions that have bodies enclosed in braces.  This is
        a bug and will be fixed soon.  You take the next step
        by typing carriage return, `n' or `next'.  You can see
        the values of variables by typing their names.  Typing
        `c' or `cont' causes the debugger to continue to the
        end of the function.  You can `debug' new functions
        before you step in to them from inside the debugger.
        If you have variables with names that are identical to
        the controls (eg. `c' or `n' ) then you need to use
        `print(c)' and `print(n)' to evaluate them.

   SSeeee AAllssoo::

        `browser', `traceback' to see the stack after an
        `Error: ...' message.

