All the things to do and not do in Drafting.
DO USE YOUR SNAPS!
DO NOT EVER EYE OR GUESS. All drafting programs are made to be precise so be sure to use snaps whenever you work.
DO USE ORTHO or even POLAR TRACKING. This keeps your lines straight. ORTHO will keep them straight all the time in the X or Y axis, you will have to turn it on and off as you work. POLAR TRACKING on the other hand, will let you go outside...
