Adapted from computer programming, a specialised form of cookie in which the author 'hides' some surprise, not germane to the storey (indeed, often irrelevant or irreverent), deep within the text, to be discovered only by the closest possible reading. For instance, in Quest of the Three Worlds, Cordwainer Smith encoded, as the first letters of consecutive sentences, the phrases KENNEDY SHOT and OSWALD TOO, without disrupting the flow of his narrative. Tuckerizing is a form of easter egg.