'Register or print a new message with timing information.'

def __call__(self, msg=None):

    if self.disable:
        return
    if (msg is None):
        msg = str(self._markCount)
    self._markCount += 1
    newTime = ptime.time()
    self._newMsg('        %s:    %0.4f    ms', msg, ((newTime - self._lastTime) * 1000))
    self._lastTime = newTime
