Re: [Therion] Entering survey sketch without walls

For this case, though, that will not work.  There are no passages in this mine.  Think of a large room in a building with support columns in the middle.

You have to change your mindset. It *is* a series of passages. They are just very short before reaching the next junction. And just like if you were surveying a cave passage 100 metres wide and 50 metres long, you have to draw the walls, and close the gaps between them with an outline. See attached (case 3).