What is the main purpose of Snap settings in AutoCAD?

The main purpose of Snap settings in AutoCAD is to enhance drawing accuracy. Snap is a feature that allows users to restrict the cursor movement to specific intervals or points in the drawing environment. By utilizing different snap options, such as grid snap or object snap, users can ensure that their drawings are precise and that objects align perfectly with one another. This helps maintain accuracy, especially in technical drawings where precision is crucial.

The other options, while relevant to various functionalities within AutoCAD, do not pertain to the Snap settings. Creating layers involves organizing the components of a drawing but is not related to cursor movement and positioning. Modifying keyboard shortcuts is a customization feature for user interface efficiency and does not impact how accurately one can draw. Similarly, saving drawing files pertains to file management, which is also unrelated to the snap feature's focus on precision in drawing placements.