As I understand it, you draw your drawing to scale in model space. So, if I draw a desk top that is 20" x 16" in size, I use those exact units in modelspace. Then, what happens when I click on the layout tab? If I am printing on an 8 1/2" x 11" piece of paper, when I go to page setup my scale should be about 1:2 or 1:4, right? If my scale was 1:2, my drawing should just barely fit in the viewport, which should just barely fit in the drawing space. Is this correct so far?