A look at how to create a basic light rig using Directional Constraints in modo 701 from Richard Hurrey, who posts this in answer to a specific forum question, however, being incredibly insightful for everyone.

This is a video shows a basic how to for layering direction constraints in modo

Richard demonstrates how to create some controls using directional constraints in modo 701 and using the Matrix Channel Effect to limit axis of rotation for the rig. Richard notes that this is really an endeavor in using layered directional constraints where they can behave and work together in one system.