How does a block function in CNC programming?

In CNC programming, a block represents a single instruction or line of code that tells the machine what action to perform. Each block can contain various commands or codes that direct the CNC machine to execute specific operations, such as movements, speeds, or tool selections. This structured approach allows for efficient programming and execution of complex machining processes by breaking them down into manageable, discrete instructions.

While the other options may seem relevant in the context of CNC operations, they do not accurately define what a block specifically represents in programming. A section of the material being cut refers to the physical object rather than the programming instructions. The speed setting relates to the parameters of operation but is not encapsulated within the definition of a block. Similarly, tool paths are defined by the combination of multiple blocks executing sequentially and do not individually characterize a single block of code.