Non-Surface Entities

This command tags selected entities in the drawing so that they will not be used when creating a surface in commands like Triangulate & Contour. For example, you could tag a 3D polyline for a building roof so that it's not used for modeling the ground surface. There are three commands to manage these tags:
Tag Non-Surface Entities: adds the non-surface tag to the selected entities
Untag Non-Surface Entities: removes any non-surface tag from the selected entities
Report Non-Surface Entities: reports the entity type and location for any selected entities that have active non-surface tags

Prompts

Select entities to tag as non-surface.
Select objects: pick entities to tag

Pulldown Menu Location: 3D Data >> Non-Surfaces Points/Entities
Keyboard Command: tagns_ent, untagns_ent, reportns_ent
Prerequisite: Entities in the drawing