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In computing, a keyboard shortcut (also hotkey/hot key or key binding) [1] is a software-based assignment of an action to one or more keys on a computer keyboard. Most operating systems and applications come with a default set of keyboard shortcuts , some of which may be modified by the user in the settings .
A parameterized macro is a macro that is able to insert given objects into its expansion. This gives the macro some of the power of a function. As a simple example, in the C programming language, this is a typical macro that is not a parameterized macro, i.e., a parameterless macro: #define PI 3.14159
Most keyboard shortcuts require the user to press a single key or a sequence of keys one after the other. Other keyboard shortcuts require pressing and holding several keys simultaneously (indicated in the tables below by the + sign). Keyboard shortcuts may depend on the keyboard layout.
find the value (if any) that is bound to a given key. The argument to this operation is the key, and the value is returned from the operation. If no value is found, some lookup functions raise an exception, while others return a default value (such as zero, null, or a specific value passed to the constructor).
Macro key on an old keyboard. A macro key is a keyboard key that can be configured to perform custom, user-defined behavior. Many keyboards do not have a macro key, but some have one or more. Some consider a macro key to enhance productivity by allowing them to do operations via a single key press that otherwise requires slower or multiple UI ...
This can cause problems when trying to play back a macro if the user's desktop environment has changed. For example, if the user has changed their desktop resolution, moved icons, or moved the task bar, the mouse macro may not perform the way the user intended. That's one of the reasons for preferring keyboard macros over the mouse-oriented ones.
This is where the most common key sequences have been studied [citation needed], and keys in the same common sequence are placed in the electrical switch matrix such that three keys down cannot produce a fourth "phantom" key by shorting out the matrix. The simplest way to accomplish this is to put all keys in the same common sequence on the ...
Keyboard keys can also be remapped and disabled—for example, so that pressing Ctrl+M produces an em dash in the active window. [9] AutoHotkey also allows "hotstrings" that automatically replace certain text as it is typed, such as assigning the string "btw" to produce the text "by the way", or the text "%o" to produce "percentage of". [10]