def start(cls, settings=None):
        """
        RUN ME FIRST TO SETUP THE THREADED LOGGING
        http://victorlin.me/2012/08/good-logging-practice-in-python/

        log       - LIST OF PARAMETERS FOR LOGGER(S)
        trace     - SHOW MORE DETAILS IN EVERY LOG LINE (default False)
        cprofile  - True==ENABLE THE C-PROFILER THAT COMES WITH PYTHON (default False)
                    USE THE LONG FORM TO SET THE FILENAME {"enabled": True, "filename": "cprofile.tab"}
        profile   - True==ENABLE pyLibrary SIMPLE PROFILING (default False) (eg with Profiler("some description"):)
                    USE THE LONG FORM TO SET FILENAME {"enabled": True, "filename": "profile.tab"}
        constants - UPDATE MODULE CONSTANTS AT STARTUP (PRIMARILY INTENDED TO CHANGE DEBUG STATE)
        """
        global _Thread
        if not settings:
            return
        settings = wrap(settings)

        Log.stop()

        cls.settings = settings
        cls.trace = coalesce(settings.trace, False)
        if cls.trace:
            from mo_threads import Thread as _Thread
            _ = _Thread

        # ENABLE CPROFILE
        if settings.cprofile is False:
            settings.cprofile = {"enabled": False}
        elif settings.cprofile is True:
            if isinstance(settings.cprofile, bool):
                settings.cprofile = {"enabled": True, "filename": "cprofile.tab"}
        if settings.cprofile.enabled:
            from mo_threads import profiles
            profiles.enable_profilers(settings.cprofile.filename)

        if settings.profile is True or (is_data(settings.profile) and settings.profile.enabled):
            Log.error("REMOVED 2018-09-02, Activedata revision 3f30ff46f5971776f8ba18")
            # from mo_logs import profiles
            #
            # if isinstance(settings.profile, bool):
            #     profiles.ON = True
            #     settings.profile = {"enabled": True, "filename": "profile.tab"}
            #
            # if settings.profile.enabled:
            #     profiles.ON = True

        if settings.constants:
            constants.set(settings.constants)

        if settings.log:
            cls.logging_multi = StructuredLogger_usingMulti()
            for log in listwrap(settings.log):
                Log.add_log(Log.new_instance(log))

            from mo_logs.log_usingThread import StructuredLogger_usingThread
            cls.main_log = StructuredLogger_usingThread(cls.logging_multi)