Kept in

• Kept in a galley?
• Decided to keep
• Left in, to a proofreader
• Not taken out
• Horse keeping dry, put back as before
• Used an editorial instruction
• Marked for inclusion

WordNet Word definitions in WordNet
v. printing: cancel, as of a correction or deletion printing: direct that a matter marked for omission or correction is to be retained (used in the imperative) [also: stetting , stetted ]