In this article, the authors examine the role revision memos played in composition classrooms. Both authors used the memos to help students reflect on their writing and continue revising. The memos also served as guides for the instructors as they responded to their students' writing. The memos were a reminder that the instructors needed to focus their commentary so that the students would be able to revise more effectively. The authors give student examples that show how the memos successfully helped the writers improve throughout the semester. Each author includes an appendix that describes how he used revision memos in his class.