An "Instruction List" is a type of programming language used primarily in industrial automation and control systems. It consists of a series of simple, sequential instructions that are easy to read and understand. This format allows programmers to create and manage control logic for devices like Programmable Logic Controllers (PLCs) efficiently. Instruction Lists are part of the IEC 61131-3 standard, which defines various programming languages for industrial applications. They are particularly useful for tasks that require straightforward operations, such as turning devices on or off, performing calculations, or managing input and output signals.