Thank you for that reference. It's another good example of the power of Visio to revise a Shapes Graphics.
What I was suggesting and asking for however, was a detailed article, maybe using an out of the box Visio Shape like the "Opening" Shape in the Walls, Shell and Structure Stencil as basic example, and showing the details which control it's particular behavior and interaction with other Shapes on a Document. I like the articles which explain the details on why and how things work the way they do in Visio
Thanks!