A program listing is a set of instructions that can be used to create a computer program. It is usually written in a programming language and consists of CODE, BYTES, and other elements. CODE is a set of instructions written in a programming language that tells the computer what to do. BYTES are a unit of digital information that is typically 8 bits long. An EMCEE is a person who hosts an EVENT or show. A CAST is a group of people who perform in a play, movie, or other production. An EVENT is a planned occasion or activity.