The Page Scroll plugin is designed to enhance navigation within Obsidian, particularly for devices with e-ink screens, where normal scrolling can cause visual artifacts. It provides four buttons for quick navigation: jumping to the top, scrolling up by a page, scrolling down by a page, and jumping to the bottom of a document. This functionality ensures smoother and more efficient navigation on both desktop and mobile devices, making it particularly useful for users on e-ink devices or those who prefer precise scrolling controls.