OK, I got use of a computer with XP and have been learning SU7.
Pretty cool. As a kid, I worked just long enough as a carpenter to be
dangerous, but not to read blueprints. Now I'm trying to create some.
As a mechanical CAD designer, I'm used to working in thousandths of an
inch. I'm sure that level of accuracy is not needed for architectural
drawings. Or is it?

Main question. When I'm creating detailed drawings of the deck I'm
repairing, do I create them using nominal dimensions (2"x4") or actual
dimensions (1-1/2"x3-1/2") for lumber? Seems like it should be the
later, specially for cutting to length. What kinda tolerances are
typical for framing and the like?

nb