I have been asked to revise and resubmit an article submitted for an IR journal. But it’s a big r&r; the editor even said it would be “a great deal of work” (groan). While I must make the changes to the ms, I must also submit a letter to the editors and reviewers to explain my changes. That’s normal of course, but I wonder how the community would appraise the proper length of a letter to the editor for a major r&r? In my last r&r,...