Today, I received a copy edited manuscript back from an author. On top was a cover note:
Please find enclosed my response to the copy edit. I have used red pen to locate my changes to the document, and a green pen to indicate where I would like the CE’s edits to be STETed. However, there is a slight problem, as I am red-green colorblind, so some of the marks may be the opposite of what they should be.
I inherited this author and haven’t worked with him much before, so I have polled the office about this note. They do not think he is joking.