What does the local adjustment preset in Lightroom preset folder do?

The local adjustment preset is a local adjustment preset, which is used for gradient filters and adjustment brushes.

Enter the picture modification mode, click: gradient filter/adjustment brush, and the initial adjustment items will be displayed in the toolbar, such as: effect: exposure; Click this effect bar directly with the mouse, and other preset adjustments will appear except exposure. You'll get familiar with it after groping.