Roof Slabs and Converting to Roof Slabs

Roof slabs are used to create complex compound roof types that are not possible for the Roof tool. E.g. Skillion (Lean-to, Shed), Saltbox, M-Shaped, Gambrel, Mansard, Butterfly, Combination (Bonnet), Dormer, Dutch Gable, Jerkinhead, Flat, Cross Gabled.
Roof Slabs are created from closed linear polylines (no arcs) or standard roofs.
Example of Slab Use
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To Convert to a Roof Slab:

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