add.restore.point.test
                        Add one or several test functions
assert                  Checks whether cond holds true if not throws an
                        error
break.point             Sets a break point that can be debugged like a
                        restore point
calls.to.trace          Transforms a list returned by sys.calls into a
                        vector of strings that looks like a result of
                        traceback()
can.parse.multi.line    Checks whether for the installed R version the
                        function env.console is able to correctly parse
                        R expressions that extend over more than a line
clone.environment       Deep copy of an environment
copy.into.env           Copies all members of a list or environment
                        into an environment
default.error.string.fun
                        A default error string function for eval with
                        error trace
disable.restore.points
                        Globally disable or enable restore points
env.console             Emulates an R console that evaluates
                        expressions in the specified environement env.
                        You return to the standard R console by
                        pressing ESC
eval.with.error.trace   Evals the expression such that if an error is
                        encountered a traceback is added to the error
                        message.
get.restore.point.options
                        Get global options for restore points
get.stored.dots         Returns the ellipsis (...) that has been stored
                        in restore.point name as a list
get.stored.object.list
                        Retrieves the list of all restore.points with
                        the stored objects
is.storing              Check whether objects currently are stored or
                        not
restore.objects         Restore stored objects by copying them into the
                        specified environment. Is used by restore.point
restore.point           Sets a restore point
restore.point.browser   Examing a previously stored restore point by
                        invoking the browser.
restore.point.options   Set global options for restore points
set.storing             Set whether objects shall be stored or not
store.objects           Stores all local objects of the calling
                        environment to be able to restore them later
                        when debugging. Is used by restore.point
