Chapter 13 · Show Control 119 Q UESTION 3: I S THE S HOW E VENT -B ASED , T IME -B ASED , OR A H YBRID ? The three basic types are event-based, time-based, or hybrid event/time based; see the "Cueing Methods" section, on page 15, for more information on the various types. Q UESTION 4: W HAT IS THE C ONTROL I NFORMATION S OURCE ? This may sound complex, but what we're looking for is simple: we need a way to get informa- tion about the show into the control systems. Is a skilled technician operating the system? Is a nontechnical person running the system? Are the audience members themselves running the system? Is the show run from a time-of-day clock? Does the show start at sunset and run through sunrise? Determining this and how you can get this information into some machine- readable form, will be a big factor in deciding which system or technology is best for your application. Q UESTION 5: W HAT IS THE T YPE O F U SER I NTERFACE R EQUIRED ?