A program is a series of that are executed when the variable is accessed. All program variables are custom named, and, on the TI-84, accessed using the prefix prgm. Program variables have a built in editor, and cannot be edited using the Store command. According to the TI-84, all programs are considered programs. In the TI-89, only programs that do not return a value are Programs. Those that return values are considered Functions ! This article is a stub. Please help the TI-BASIC Wiki by [ expanding it]