The loop marker is activated and then the EDIT menu runs Consolidated, and all the mounts will be consolidated in a consistent clip for easier handling.

It's an audio clip made of form to which some clips are routed after being routed, the clip is applied to a rapid change in volume or other effect, flange etc.

  The fact is that the effect can be applied in a loop synchronized with the temp because the Dummy clip does not have to have the actual length as the other clips. In fact, it can be very short, just as much as a measure, or a half measure, while the other clips will go through it normally     

  http://www.youtube.com/watch?v=ZS3o92Fkcvc