I came across this post on my dashboard: Creating an Editorial Road Map. As the post says, it's basically a chapter-by-chapter plot breakdown. Kristin Nelson uses this breakdown to critique her clients' manuscripts. I've heard of some writers who actually do this kind of thing before they write a word of their drafts.
I can't bring myself to do that. It feels too clinical.
But I think it could be a good post-Marginally OK Draft technique...to make sure one actually has a plot. I'd like to see how it compares to my original outline, which isn't chapter by chapter, but more broad strokes.