How do I edit a document properly?

They must teach this in editing school. Or on law review. In any case, I never learned it properly. Indeed, when I first started out I used to think that “Stet!” was an epithet you yelled at interns. (I was an atrocious typist.)

But it's about time I figured it out. Here, on a single page, is everything I need to know (for the moment) about editing documents, both in hard copy and soft copy.

Ellen Lupton's excellent site is a companion resource for her book, Thinking with Type. See the Resources page of this blog for related materials.