nav_menu_link_attributes is a filter hook in WordPress that allows developers to modify the HTML attributes of a navigation menu link. This filter hook is called for each menu item in a navigation menu and can be used to add, modify or remove attributes like class, ID, rel, target, title, and more.

To use nav_menu_link_attributes hook, you can create a function that accepts an array of HTML attributes as its parameter and returns the modified array. This function should be added as a filter to the nav_menu_link_attributes hook using the add_filter() function.