short for Opening Procedure by Duplication: a very important basicScientologyprocess which has as itsgoal the separating of time, moment from moment. This is done by getting a preclear to duplicate his sameaction over and over again with two dissimilar objects. In England this process is called "Book and Bottle," probably because these two familiar objects are the most used in doing Opening Procedure by Duplication. —F/Ning Staff Members, Part II Approved Glossary