

   EEnnvviirroonnmmeenntt BBrroowwsseerr

        browser()

   VVaalluuee::

        A call to `browser' causes a pause in the execution of
        the current expression and runs a copy of the R inter-
        preter which has access to variables local to the envi-
        ronment where the call took place.  Local variables can
        be listed with `ls', and manipulated with R expressions
        typed to this sub-interpreter.  The interpreter copy is
        exited by typing `c'.  Execution then resumes at the
        statement following the call to `browser'.

        Typing `n' causes the step-through-debugger, to start
        and it is possible to step through the remainder of the
        function one line at a time.

   SSeeee AAllssoo::

        `debug', and `traceback' for the stack an error.

