Beginners Tip! Set plan parameters first.

Beginners Tip! Define your Floor, Roof parameters 1st before drawing. Yes, you can edit them, but takes a lot of unneeded work because of improper setup or planning. Look at it this way. Would you rather have your ducks all lined up (plan in place, all parameters set) or fly by the seat of your pants. I for one, prefer to have a plan. Speed is not everything, efficiency is. Be organized.