"This script can crop nested compositions to fit the image contents. Useful in cases like Photoshop imports where precomps are created as document size. It makes precomp layers easier to work with as their bounding boxes fit the images, and can speed up rendering by reducing the areas being processed.
Written on request for screen graphics designer Mark Coleran, whose work can be seen on the computer screens in movies such as The Bourne Identity and Tomb Raider. Mark designs complex user interfaces in Photoshop made up of many layers nested into groups, before importing them into After Effects to animate."