New after effects script to create render comps

I currently do some compositing work for the short film Bordercrossing. I took over from another compositor who did a couple of shots that the director and editor now want me to make some changes to. Some of those shots are very long compositions and I was asked to make changes to only some fragments of them and render those out. Since I found myself repeatedly creating new compositions that contained the big master comp as it's only layer but only the working area time fragment of it, I decided to write a small script to do this. You can find it attached or on aenhancers.com