[Superman]

Your tip about the grid was excellent, I thought I must always draw inside the grid! Now I can see my drawings so clear, many thanks

I still don’t understand the solution to my problem. I know where the 2D/3D button is but do I have to adjust the Z level? And how I do that?

If you have 2D set, and moving an entity a 3D distance will ignore the construction distance.

Left click Z then pick a point on-screen to set construction plane .. or... type a number in adjacent box

Shortcuts do work ie o=origin e=entity endpoint, q=quadrant point if arc, m=mid point of entity(there are others, and they become available at the appropriate time)