This chapter contains a description of every button and menu found in the PADE program. It is intended as a reference for those users who don't like to read manuals and for those who do. Users who prefer to jump in and try a program will probably want to start with Chapter 4 in which can be found a step-by-step tutorial using the manager/worker example program that comes bundled with the PADE source code. Each time a button or menu is encountered which is unfamiliar to the user, the user can look it up in this chapter.