I've been using BrewSmith for several batches now and I can not figure out what the difference is between Light, Medium, and Full Body choices under the mash profile section?
I set up three different mash profiles. When I check out a recipe to brew, I seek info on what characteristics the style tends to have.
Within Beersmith is a section, "Beer Styles". Often you will find a hint as to what profile to use if you check out the style you want to brew. Not always, but usually.