The MultiDrizzle Handbook is designed to help users learn about combining dithered observations. The information in this handbook has been drawn from the various individual HST instrument handbooks, as well as a considerable number of other separate documents available on the STScI Web site: . ... The most common way of combining dithered HST images is to use the "Drizzle" algorithm (Fruchter & Hook 2002). ... You can then use other chapters as required. ...