Editing Mouse keys

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'''Mouse keys''' are keyboard key-combinations that control the mouse.

Open-source firmwares [[TMK]]/[[QMK]] has support for [https://docs.qmk.fm/#/feature_mouse_keys mouse keys], which can be mapped to any key on any layer.

==Microsoft Windows==
"Mouse Keys" can be enabled in the ''Ease of Access'' settings. There is also a shortcut enabled by default: {{key press|Left Alt}} + {{key press|Left&nbsp;Shift}} + {{key press|Num Lock}}.

When enabled, the arrows on the [[numeric keypad]] move the mouse pointer around, with {{key press|5}} pressing the ''active'' button. 
Which button is active is indicated by a mouse icon in the task bar's system tray. The active button is changed by pressing {{key press|÷}} for left or {{key press|-}} for right.

Pressing {{key press|+}} double-clicks.
For drag-and-drop, {{key press|0}} holds and {{key press|.}} releases.

There is also an option in the settings for having mouse keys enabled while Num Lock is on, which would allow mouse keys also on embedded numeric keypads.

==macOS==
"Mouse Keys" are enabled in the ''Accessibility Shortcuts'' panel, or by {{key press|Command}} + {{key press|Option}} + {{key press|F5}}.
On Macs that have it, it can also be activated by pressing the fingerprint scanner three times quickly. In older MacOS, it was toggled by pressing the [[Option key]] five times.

When enabled, the numeric keypad ''and'' the keys corresponding to the embedded numeric keypad are used to move the pointer around similar to on Windows.
In this mode, the keyboard is unusable for normal input.
{{key press|5}} (and {{key press|I}}) presses the mouse button.

For drag-and-drop, {{key press|0}} (and {{key press|M}}) holds and {{key press|.}} (on keypad or keyboard) releases.
Right click, double-click and triple-click can be configured.

==Vintage platforms==
In the [[Commodore Amiga]]'s operating system, the [[Amiga key]]s acts as a modifier to enable the [[cursor keys]] to move the mouse pointer. The pointer moves faster while holding Shift. Left Amiga + Left [[Alt key|Alt]] activates the left [[mouse button]]. Right Amiga + Right Alt activates the right mouse button.

On the [[Atari ST]], the [[Alt key|Alternate key]] acts as modifier:
The cursor keys move the mouse pointer. The Insert and Clr/Home keys (to the left and right) act as left and right mouse button. The pointer moves only one pixel at a time while holding Shift.

==Note==
"Mouse key" is also sometimes used to mean [[mouse button]], i.e. a button on the mouse and not the keyboard.

==External links==
* Apple Support—[https://support.apple.com/en-gb/guide/mac-help/mh27469/mac Control the pointer using Mouse Keys on Mac]

[[Category:Keyboard terms]]