Clip mask. crop or?

Is the clip mask (in the clip tab far right) acting as a crop? (saves memory when cached), or is it just a rectangular mask for viewing purposes, but cache the original plate?

m.

—Quote (Originally by mikifx)—
Is the clip mask (in the clip tab far right) acting as a crop? (saves memory when cached), or is it just a rectangular mask for viewing purposes, but cache the original plate?

m.
—End Quote—

At this point in time, Motor 1.1.3 - the Clip Mask really just acts as a crop for tracking purposes as one often has to track off the edge of the plate.