Oh I see it will give me about 2 feet at a time. good thanks

I started a wall and took it to the end it went to 56' and would not go further. I even draged the left margin over as far as it would go.

I have moved the edges of the grid as far as I can drag them and I still need 20+ feet of space How do I get a 20x70 grid? Thanks for the help. this is the first time I have used any CAD type program. It looks very cool