Let me elaborate a problem that I wrote here earlier.

My home is not rectangular: the exterior walls are shaped like the side profile of a modern round brilliant diamond cut...in other words, a pentagon Those exterior walls are not rectangular; they have two interior 90 degree angles and three ...

...if my new free SH3D is automatically set to snap to grid points. If so, I do not understand how that works. Also, I would like"

1. to rotate a plan wall around a point.

2. to be able to "mirror" two sections of a plan wall

3. specify the angle between two connected plan walls when the angle ...