Thank you for that clear explanation. It is much appreciated, and it confirms my worst fear; someone designed architectural CAD software without an understanding of the industry. No one on the construction site ever measures from the centerline of a wall. It is always outside or inside measurements. Period.

I wondered what was wrong when I was attempting to line things up to the grid lines. What a sad situation. Having to use extra, non-default settings steps to perform a simple and normally-accomplished task is a huge mistake.