KWIKTIP
When you don't want prim faces to generate mesh, you go into edit on the prim and in the Textures tab, set whichever faces you don't want meshed to 100% transparent.
Recently, there have been a couple of MS users who have used textures that are 100% transparent instead. The problem with this is that the texture setting remains zeroed and the script is tied to the transparency setting of 100% as the indicator to ignore a prim face so that it doesn't make mesh from it. Textures are UUID based, so using one on a prim face only tells the MS script there is a texture on it.
Why is this important? If the face has a texture that is transparent, it will:
- become visible when a texture with opacity is applied
- generate mesh which can contribute to LI
- possibly become an obstacle if you set the mesh to convex hull or set to physical
- possibly impede accessing a nano mesh if the faces surround the nano
- add a Prim Face material to your linkset
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