When initially loading a page beyond the first, this option will load all pages up to the requested page instead of just the requested page. So, if you have the pager set to 10 items per page, and you load the page with ?page=2 in the url, you will get page 0, 1 and 2 loaded for a total of 30 items. <em>Note that this could cause some long page load times when loading many pages.</em>