Which of the following best describes 'G-code' in CNC programming?

G-code is a language used in CNC programming to provide specific instructions to a machine, dictating how it should move and operate to create a part. This programming language consists of a series of commands that control the machine's actions, such as movement on different axes, feed rates, and tool changes. Each command in G-code corresponds to a particular operation or function that the CNC machine needs to perform, making it essential for translating design parameters into precise machining actions.

Understanding G-code is crucial for anyone involved in CNC machining, as it allows for automation and repeatability in manufacturing. The ability to communicate complex machining tasks through G-code significantly enhances production efficiency and accuracy, serving as the backbone of modern CNC operations. This programming format is standardized, meaning that while there may be some variations across different CNC machines or manufacturers, the fundamental principles of G-code remain consistent, facilitating a wider understanding and application across different platforms.