>Usually you would do this by setting the grid snap size to your 0.1 increment and then turn on grid snap - then every point that you click with the mouse will be at that increment.

Yeah, I guess there's no real way to do what I mean.

I'm just thinking that sometimes things get a little out of alignment, even when using snaps - not entirely sure how. but often I'll make up a model and then find that some of the points/curves don't line up exactly.

I think another way of saying what I'm after is a lower resolution for positions, so that it's easy to make sure everything lines up.

No biggy! Just hopeful :P