Showing results in groups
An online shop may have thousands of products. Loading them all at once could increase page load time. Instead, it might show 25 products, then load more when you choose the next page, tap “Load more”, or keep scrolling. The number loaded at a time is the page size. Loading more as you scroll is called infinite scroll.
Keeping your place
Some apps use page numbers to track what comes next. Others use a cursor, a marker for where the last group ended. A cursor can help avoid repeated or missing results if the list changes while you browse.