Hello,
The Animation Cache operator is intended to record the simulation or animation and load an alembic file that contains the animation. For example, you add this operator on top of the hair stack and press Record, the resulting animation will be stored in an Alembic file for later use. Find more information here:
https://ephere.com/plugins/autodesk/maya/ornatrix/docs/2/Animation_Cache_Operator.html
