@John_Brock I’m with Davide on this one - the “Add Slash” button should not be on the bottom which is by (more or less) Windows convention reserved for validation (or not) of the choices. BTW, nobody really knows what a “slash” is… If we’re re-naming things in the dialog like substituting “cross section” for “shape” then I would suggest also renaming Add Slash to something like “Add Guide Section” or maybe just “Add Guide”…
Adds additional cross-section alignments to control how the surface is created between sections.
IMO, the “Add Slash” button should actually be in the top section with all the other choices, and the "closed sweep checkbox should also be moved up there. The middle section “edge continuity” should only have the edge continuity options - and “closed sweep” is not one of them.