Re: How to hide non-boundary tri edges?
There are no 'edges' specifically stored in AC3D so they can't have attributes applied to them. AC3D's editing is wysiwyg (what you see is what you get), so if you are editing a polygon, that's what you are editing - it's not a bundle of triangles with hidden edges.
All polygons are triangulated in the 3DS export.
Andy
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