In some applications, the Page Up and Page Down keys behave differently in caret navigation (toggled with the F7 function key in Windows). In most operating systems, if the Page Up or Page Down key is pressed along with the ⇧ Shift key in editable text, all the text scrolled over will be highlighted. Used together with a modifier key, such as Alt, ⌥ Opt, ^Ctrl or a combination thereof, they may act the same as the Page keys.

The arrow keys and the scroll wheel can also be used to scroll a document, although usually by smaller incremental distances. The keys have been dubbed previous page and next page, accordingly. In right-to-left settings, PgUp will move either upwards or rightwards (instead of left) and PgDn will move down or leftwards (instead of right). in Mac OS X – or also the input caret – e.g. Operating systems differ as to whether the keys (pressed without modifier) simply move the view – e.g. In cases when the document is shorter than the full screen, Page Up and Page Down often have no visible effect at all.

In word processors, for instance, they may jump by an emulated physical page or by a screen view that may show only part of one page or many pages at once depending on zoom factor. The two keys are primarily used to scroll up or down in documents, but the scrolling distance varies between different applications. The Page Up and Page Down keys (sometimes abbreviated as PgUp and PgDn) are two keys commonly found on computer keyboards. The Page Up and Page Down keys among other keys

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