In publishing, a set of page proofs typeset and output in the best-quality form, to be used as camera-ready copy. Reproduction proofs—also known simply as repro—are also read one last time for any typesetting mistakes or other errors. Any corrections are output as small two- or three-line bits of type and pasted over the original portion of text, a more economical means of correcting last-minute corrections without needing to re-output the entire set of proofs.