The Page Up and Page Down keys (sometimes abbreviated as PgUp and PgDn) are two keys commonly found on computer keyboards.
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The two keys are primarily used to scroll up or down in documents, but the scrolling distance varies between different applications. 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. In cases when the document is shorter than one screenful, Page Up and Page Down often have no visible effect at all.
Operating systems differ as to whether the keys (pressed without modifier) just move the view – e.g. in Mac OS X – or also the input caret – e.g. in Microsoft Windows. 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). The keys have been dubbed previous page and next page, accordingly.
The arrow keys and the scroll wheel can also be used to scroll a document, although usually by smaller incremental distances. Used together with a modifier key, such as Alt, ⌥ Opt, ^Ctrl or a combination thereof, they may act the same as the Page keys.
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.
Retrieve administrator password mac. In some applications, the Page Up and Page Down keys behave differently in caret navigation (toggled with the F7 function key in Windows). For a claimed 30% of people[according to whom?], the paging keys move the text in the opposite direction to what they find natural,[1] and software may contain settings to reverse the operation of these keys to accommodate that.
In August 2008, Microsoft received the patent #7,415,666 for the functions of the two keys – Page Up & Page Down.[2][3]
See also[edit]
References[edit]
- ^Wallace, Bob; Elizabeth Houser (1989). PC-Write Reference Manual (3.03 ed.). Seattle, WA: QuickSoft, Inc. p. 397.
- ^Microsoft Patents Page Up & Down Keys, 2 September 2008, Aaron Heibert, Tom's Hardware, retrieved at 25 January 2017
- ^Microsoft patents 'Page Up' and 'Page Down', 29 August 2008, David Meyer, ZDNet, retrieved at 25 January 2017
IBM PC keyboard (Windows, ANSI US layout) | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Esc | F1 | F2 | F3 | F4 | F5 | F6 | F7 | F8 | F9 | F10 | F11 | F12 | PrtScn/ SysRq | Scroll Lock | Pause/ Break |
Insert | Home | PgUp | Num Lock | ∕ | ∗ | − | |||||||||
Delete | End | PgDn | 7 | 8 | 9 | + | |||||||||
4 | 5 | 6 | |||||||||||||
↑ | 1 | 2 | 3 | Enter | |||||||||||
← | ↓ | → | 0 Ins | . Del |
While Apple's full-size keyboards have dedicated Home, End, Page Up, & Page Down keys, their compact keyboards (such as those found on laptops) do not. Instead, they double-up the function of some keys. Apple does not label the second function of all the keys, so not everyone realizes their full potential!
When you hold the function (fn) key and press certain keys on Apple keyboards, it makes those keys act differently. It activates their alternate function. Here are the common ones you should know:
- Page Up is fn-Up Arrow
- Page Down is fn-Down Arrow
- Home is fn-Left Arrow
- End is fn-Right Arrow
- Enter (in the number pad of a full keyboard) is fn-Return
- Delete Right (also called Forward Delete) is fn-Delete
Apple Imac Keyboard Layout Diagram
Be sure to check out my Mac keyboard shortcuts page for many more tips and tricks like this!