pipesupportosnap
How it should work: This variable turns on/off pipe support osnaps. Similar to DGNOSNAP. When On - each snap point (Endpoint, Midpoint etc.) works as usuall. You can snap for pipe support geometry like for any other object. When off - only node snap point is available as it is now in Plant 3D.
Why it is important: Currently snap points (excluding Node) are hardcoded deactivated. That means measurnig distance, moving to/from certain point is very limited. It makes normal work much harder.
Read more in this topic.