I am searching an addon. I was using a script in 3ds max. It was very useful when making animation. It allows you to designate the specified region of frames to the cache (You have 4 slots for that). You are determining the first frame region (lets say, frame 120-240) and click save to the slot. Than you determine frame 400-500. Click save to another slot. When you decide to go back to click 120-240 area, just click another button near slot 1. And you can switch to first frame region again. Is there anything like this?