part of a book replaced from what was originally printed (eg the title page of Dornford Yates' 'Wife Apparent', 1956 - during printing it was discovered that the intended title was already in use and so the whole run had a new title tipped to the stub of the original)
any part of a book substituted for what was originally printed It may be of any size, from a tiny scrap of paper bearing one or two letters pasted on over those first printed, to several sheets replacing the original ones The most common form is a single leaf Original leaf = cancellandum; replacement leaf = cancellans