The delete key is a button on most computer keyboards which is typically used to delete either (in text mode) the character ahead of or beneath the cursor, or (in GUI mode) the currently-selected object. The key is sometimes referred to as the "forward delete" key. This is because the backspace key also deletes characters, but to the left of the cursor. On many keyboards, such as most Apple keyboards, the key with the backspace function is also labelled "delete".
The key appears on English-language IBM-compatible PC keyboards labeled as Delete or Del, sometimes accompanied by a crossed-out right-arrow symbol. [1] [2] A dedicated symbol for "delete" exists as U+2326 ⌦ but its use as a keyboard label is not universal. However, sometimes the key labelled Delete performs the Backspace function instead, for example on some Apple keyboards. [3]
In other cases, the Delete key is in its original IBM notebook position of above and to the right of the Backspace key. [ clarification needed ] Many laptops add rows of smaller keys above the Function key line to add keys on a non-standard size keyboard. On this row of smaller keys, the position of the Delete key is positioned at or near the right-hand end. On a MacBook, the forward delete function can be achieved using the Fn +← Backspace key combination or simply Control+D.
The Delete key is typically smaller and less-conveniently located than the Backspace key, and on keyboards where space is limited, for example those omitting the numeric keypad or virtual keyboards on mobile devices, it is often omitted altogether.
On some compact keyboards (for example, the 60-key Happy Hacking Keyboard), the Delete key replaces the conventional Backspace key, and the Backspace function is achieved by holding the Fn key and pressing Delete.
When struck on a computer keyboard during text or command editing, the delete key (Delete or Del), known less ambiguously as forward delete, discards the character ahead of the cursor's position, moving all following characters one position "back" towards the freed letterspace. The key is also used by many GUI applications to request deletion of the currently-selected object, for example a file in a file browser or a block of text in a word processor.
The delete key often works as a generic command to remove a selected object, such as an image embedded in a document. On Apple Keyboards, both the forward delete key and the delete (backspace) key have the same effect when pressed while an object is selected. [1]
On Unix-like systems, the delete key is usually mapped to ESC[3~ which is the VT220 escape code for the "delete character" key.[ clarification needed ] [4]
The delete key, on many modern motherboards, also functions to open the BIOS setup screen when pressed after starting the computer.
In GUI applications where the Delete key is enabled, especially in file browsers, pressing it does not necessarily immediately delete the selected object, but often a confirmation dialog box will appear to allow the user to cancel the deletion, or the object may instead be silently moved to a "trash folder" or equivalent, so that it can be recovered later. In other GUI contexts, the Undo function can often reverse a deletion.
As many Apple keyboards lack a dedicated key for the forward delete function, Mac users wishing to have a dedicated forward delete key can reassign the forward-delete function to a different key using various third-party applications, such as DoubleCommand, Karabiner or PowerKey. For example, installing and enabling the DoubleCommand application allows the user to use the Backslash, Capslock or numeric keypad ↵ Enter keys as a forward delete key. [5]
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The keyboard for IBM PC-compatible computers is standardized. However, during the more than 30 years of PC architecture being frequently updated, many keyboard layout variations have been developed.
In computing, a modifier key is a special key on a computer keyboard that temporarily modifies the normal action of another key when pressed together. By themselves, modifier keys usually do nothing; that is, pressing any of the ⇧ Shift, Alt, or Ctrl keys alone does not (generally) trigger any action from the computer.
Cut, copy, and paste are essential commands of modern human–computer interaction and user interface design. They offer an interprocess communication technique for transferring data through a computer's user interface. The cut command removes the selected data from its original position, and the copy command creates a duplicate; in both cases the selected data is kept in temporary storage called the clipboard. Clipboard data is later inserted wherever a paste command is issued. The data remains available to any application supporting the feature, thus allowing easy data transfer between applications.
In computing, a Control keyCtrl is a modifier key which, when pressed in conjunction with another key, performs a special operation. Similarly to the Shift key, the Control key rarely performs any function when pressed by itself. The Control key is located on or near the bottom left side of most keyboards, with many featuring an additional one at the bottom right.
A function key is a key on a computer or terminal keyboard that can be programmed to cause the operating system or an application program to perform certain actions, a form of soft key. On some keyboards/computers, function keys may have default actions, accessible on power-on.
Num Lock or Numeric Lock (⇭) is a key on the numeric keypad of most computer keyboards. It is a lock key, like Caps Lock and Scroll Lock. Its state affects the function of the numeric keypad commonly located to the right of the main keyboard and is commonly displayed by an LED built into the keyboard.
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Common User Access (CUA) is a standard for user interfaces to operating systems and computer programs. It was developed by IBM and first published in 1987 as part of their Systems Application Architecture. Used originally in the MVS/ESA, VM/CMS, OS/400, OS/2 and Microsoft Windows operating systems, parts of the CUA standard are now implemented in programs for other operating systems, including variants of Unix. It is also used by Java AWT and Swing.
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The Insert keyInsert is a key commonly found on computer keyboards.
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The delete control character is the last character in the ASCII repertoire, with the code 127. It is supposed to do nothing and was designed to erase incorrect characters on paper tape. It is denoted as ^? in caret notation and is U+007F in Unicode.
A computer keyboard is a peripheral input device modeled after the typewriter keyboard which uses an arrangement of buttons or keys to act as mechanical levers or electronic switches. Replacing early punched cards and paper tape technology, interaction via teleprinter-style keyboards have been the main input method for computers since the 1970s, supplemented by the computer mouse since the 1980s.
In computing, an input device is a piece of equipment used to provide data and control signals to an information processing system, such as a computer or information appliance. Examples of input devices include keyboards, computer mice, scanners, cameras, joysticks, and microphones.
| 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 | ||||||||||||||||||||
