Delete key: Difference between revisions

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		The '''delete key''', known less ambiguously as ''forward delete'', ''Del'', or ''⌦'', performs a function when struck on a ] during text or command editing which discards the character ahead of the ]'s position, moving all following characters one position "back" towards the freed place. The key appears on ] labeled as ''Delete'', or ''Del''. On ]s, the key which performs this function is labeled ''del'' and ''⌦'', as the full word ''delete'' is reserved for labelling the key otherwise known as ].

		The delete key may generate the ] delete character, 7F hex (127 decimal), which reflects its history in 7-bit ]. If a character was punched erroneously, punching out all seven bits caused it to be ignored (or deleted). Unix retained the Delete key as the way to erase characters, while DOS/Windows used the backspace (0x08, or control-H) instead. The delete key may also be mapped to ESC ] escape code for the "delete character" key.<ref>{{cite web \| title=9.8 Keyboard configuration \| work=Debian Policy Manual \| url=http://www.debian.org/doc/debian-policy/ch-opersys.html#s9.8}}</ref>

		On many notebook computer keyboards the key labeled Delete (sometimes Delete and Backspace are printed on the same key) serves the same purpose as a Backspace key. Othertimes, the Delete Key is in its original IBM notebook position of above and to the right of the Backspace key. Many laptops, to add keys on a non-standard size keyboard add rows of smaller keys above the Function Key line. On this line, the Delete Key is often the third key in from the right. On ]'s line of laptops (notably the ] and ]), the function of the delete key can be achieved by pressing the ] key and the delete/backspace key.

		Sometimes this desired effect is replaced by inserting "^H" (or, less frequently, "^?") instead. This is related to ] for BS and DEL.

		Also, the delete key often works as a generic command to remove an object (such as an image embedded in a document, or a file in a ]).

		The delete key, on many modern motherboards also functions to open the ] screen, when pressed after starting the computer.

		==References==
		<references/>

		==See also==
		* ]
		{{Keyboard}}
		{{keyboard keys}}

		]

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Revision as of 05:01, 6 February 2009

The delete key, known less ambiguously as forward delete, Del, or ⌦, performs a function when struck on a computer keyboard during text or command editing which discards the character ahead of the cursor's position, moving all following characters one position "back" towards the freed place. The key appears on IBM-compatible PC keyboards labeled as Delete, or Del. On Mac keyboards, the key which performs this function is labeled del and ⌦, as the full word delete is reserved for labelling the key otherwise known as Backspace.

The delete key may generate the ASCII delete character, 7F hex (127 decimal), which reflects its history in 7-bit paper tape. If a character was punched erroneously, punching out all seven bits caused it to be ignored (or deleted). Unix retained the Delete key as the way to erase characters, while DOS/Windows used the backspace (0x08, or control-H) instead. The delete key may also be mapped to ESC [3 ~ which is the VT220 escape code for the "delete character" key.

On many notebook computer keyboards the key labeled Delete (sometimes Delete and Backspace are printed on the same key) serves the same purpose as a Backspace key. Othertimes, the Delete Key is in its original IBM notebook position of above and to the right of the Backspace key. Many laptops, to add keys on a non-standard size keyboard add rows of smaller keys above the Function Key line. On this line, the Delete Key is often the third key in from the right. On Apple Inc.'s line of laptops (notably the MacBook and MacBook Pro), the function of the delete key can be achieved by pressing the Fn key and the delete/backspace key.

Sometimes this desired effect is replaced by inserting "^H" (or, less frequently, "^?") instead. This is related to ASCII control characters for BS and DEL.

Also, the delete key often works as a generic command to remove an object (such as an image embedded in a document, or a file in a file manager).

The delete key, on many modern motherboards also functions to open the BIOS screen, when pressed after starting the computer.

References

"9.8 Keyboard configuration". Debian Policy Manual.

IBM PC keyboard (Windows, ANSI US layout) v t e
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	Enter

v t e Keyboard keys
Dead keys	Compose Gold
Modifier keys	Control Shift Alt / Option (Apple) AltGr Command (Apple) / Windows (Microsoft) / Super Meta Hyper Fn
Lock keys	Scroll Lock Num Lock Caps Lock F-Lock
Navigation keys	Arrow keys Page Up/Page Down Home End Esc Menu
Editing	Enter/Return Carriage return Backspace Insert Delete Tab Space bar Numeric keypad Language input
Contextual	Function keys Print Screen System request Break/Pause
Misc.	Power management keys (Power, Sleep, Wake) Any key Macro key Copilot key Keyboard technology Keyboard shortcut Keyboard layout Keyboard mapping

Revision as of 05:01, 6 February 2009

References

See also