It acts as a pre-processor to compute the structural properties—specifically stiffness and inertial properties—of a composite blade , such as those used in wind turbines.
In After Effects, "precomping" is the process of taking one or more layers and moving them into a new composition. This is often used to create a , such as a crumpled or folding paper animation. How to Precompose: Select the layers you want to group in your timeline. precomp