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The Materials 4X release is about adding the minimum features required to compliment Materials X which is co-mingled.
This is a minimalistic release and will be limited in the new features present. The follow-on release will add much more functionality. This version is likely 1.04
Features include:
What I'm imagining is while in Gradework/future Sitework, any Materials Area structures in the file are listed by name with a checkbox on whether they are present as a sectional in Gradework. We may want to consider for this dialog also listing the total sectional depth. Checking the box means that area is used as Sectional area as well.