Hole material

[ubiquity]

Thanks Micheus I will study the advice in that thread. As a Blender user I was used to meshes with holes and not having ventured into importing and exporting was curious to know the difference between Wings 3D 1.5.3 and earlier versions. I was basing the question on this otherwise very useful Youtube video that talks about what now appears to be the "old" material approach to holes.
https://www.youtube.com/watch?v=wrV_YFnOGzU The video shows what seems to be a very sensible 'use' of a hole.