Manuscript Preparation, Copyediting, and Proofreading

Q. Would you share a sample of proofreading marks on a manuscript page? I refer to figure 2.6 from CMOS, but it does not explain where to position marks on the line and/or in the margins.

A. Certainly. Please see figure 2.5 for a marked-up manuscript (marks in the line) and figure 2.7 for marked proofs (marks in the margins).

[This answer relies on the 17th edition of CMOS (2017) unless otherwise noted.]