Editor's Instruction is a term used in the publishing industry to refer to the instructions given by an editor to a writer or other staff member. It is often abbreviated as STET, which stands for Latin phrase 'stetit scriptum' meaning 'let it stand'. STET is used to indicate that no changes should be made to a particular piece of text. Editor's Instruction is an important part of the editing process and helps ensure that the final product meets the standards of the publisher.