SYNOPSIS
        void call_out(string fun, int delay, mixed arg, ...)
        void call_out(closure cl, int delay, mixed arg, ...)

DESCRIPTION
        Set up a call to function fun in the current object, or to
        closure cl. The call will take place in delay seconds, with the
        remaining argument list provided. delay can be a minimum time
        of one second.

        call_out() saves and restores the current user. It is now
        possible to use say() or write() which rely on a current
        user to be something useful.

        call_out() can only call functions which are publicly accessible,
        i.e. "public" and "static" functions. "private" and "protected"
        functions can't be called.

        The execution of the call_out()s implies a simple (not
        exhaustive) measure against rabbits: the evaluation costs of
        those call_outs() executing at the same time are summed up on
        a per-UID base. If the summed-up costs exceed the given maximum,
        a 'too long evaluation' error will occur and any remaining
        call_outs() of this user scheduled for the same time are
        discarded.

EXAMPLE
        call_out("RefreshMe", 10);

        This will call the function RefreshMe() in 10 seconds without
        any arguments. The function RefreshMe() can then call out
        itself again which will result in a loop (not in a recursion)
        which can be used to check or set up things in the object in
        intervals. Be aware that callouts are stored in a linear
        list, and so are somewhat expensive for the driver.

        And YES: self-replicating call_out()s, where each call_out()
        creates two or more other call_out()s in a loop (so called
        'rabbits') slow the mud down very fast, and are even able
        to crash it. No need to try it yourself.

SEE ALSO
        remove_call_out(E), call_out_info(E), find_call_out(E),
        this_player(E), reset(A), heart_beat(A)