Which directional movement does the spindle rotate according to the m4 command?

The m4 command in CNC programming is specifically used to indicate that the spindle should rotate counterclockwise. This movement is crucial for operations like milling, drilling, and other machining tasks where the tool's direction affects the cutting action and the quality of the finished part. Understanding this command is essential for machining processes to ensure proper tool engagement and to achieve the desired results in operations. The spindle's direction can significantly influence chip removal, surface finish, and tool wear, making knowledge of commands like m4 vital for anyone operating CNC equipment.