Shift key

Shift Shift shift" keyshifted keys
The shift key is a modifier key on a keyboard, used to type capital letters and other alternate "upper" characters.wikipedia
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Control key

Ctrlcontrol Ctrl
It can modify various control and alt keys. For example, if Alt-Tab is used to cycle through open windows, Shift-Alt-Tab cycles in the reverse order.
In computing, a Control key is a modifier key which, when pressed in conjunction with another key, performs a special operation (for example, [[Control-C|]]); similar to the Shift key, the Control key rarely performs any function when pressed by itself.

Alt key

Alt Alt [Alt] key
It can modify various control and alt keys. For example, if Alt-Tab is used to cycle through open windows, Shift-Alt-Tab cycles in the reverse order.
Thus, the Alt key is a modifier key, used in a similar fashion to the Shift key.

Apple Keyboard

keyboardkeyboardsApple Pro Keyboard
This symbol is commonly used to denote the Shift key on modern keyboards (especially on non-US layouts and on the Apple Keyboard), sometimes in combination with the word “shift” or its translation in the local language.
The Option key, for entering diacritics and other special characters. Like the Shift and Control keys, the Option key serves as a modifier for the Command key shortcuts, as well as being used to type many special characters. It serves the function of the solid-Apple key in Apple II applications. It functions as the Alt key in Unix and Windows environments. Compared to their equivalents on the standard IBM PC keyboard layout the Command key and the Option key are located in reverse order.

Typewriter

typewriterselectric typewritertypewritten
The shift key's name originated from the typewriter, where one had to press and hold the button to shift up the case stamp to change to capital letters;
A significant innovation was the shift key, introduced with the Remington No. 2 in 1878.

ISO/IEC 9995

ISO/IEC 9995-7ISO 9995-8third level
The keyboard symbol for the Shift key (which is called Level 2 Select key in the international standard series ISO/IEC 9995) is given in ISO/IEC 9995-7 as symbol 1, and in ISO 7000 “Graphical symbols for use on equipment” as a directional variant of the symbol ISO-7000-251.
The selection of level and group during the input of a character (e.g. by means of a shift key, an AltGr key, or a Group Selection key or key sequence) is specified in ISO/IEC 9995-2.

Caps lock

International Caps Lock Daycaps-lockCaps Lock Key
When the caps lock key is engaged, the shift key can be used to type lowercase letters on many operating systems, but not macOS.
However, on certain non-QWERTY keyboard layouts, such as the French AZERTY and the German QWERTZ, Caps Lock still behaves like a traditional Shift lock, i.e., the keyboard behaves as if the Shift key is held down, causing the keyboard to input the alternative values of the keys; example the "5" key generates a "%" when Caps lock is pressed.

Letter case

minusculelowercaselower case
When the caps lock key is engaged, the shift key can be used to type lowercase letters on many operating systems, but not macOS.
Also commonly seen in computer languages, and in informal electronic communications such as SMS language and instant messaging (avoiding the shift key, to type more quickly).

Question mark

????interrogation point
On the US layout and similar keyboard layouts, characters that typically require the use of the shift key include the parentheses, the question mark, the exclamation point, and the colon.
In GNOME applications on GNU Linux operating systems, it can be entered by typing the hexadecimal Unicode character (minus leading zeros) while holding down both Ctrl and Shift, I J mm.e.: Ctrl Shift B F . In recent XFree86 and X.Org incarnations of the X Window System, it can be accessed as a compose sequence of two straight question marks, i.e. pressing Compose ?

Computer keyboard

keyboardkeyboardsalphanumeric keyboard
The shift key is a modifier key on a keyboard, used to type capital letters and other alternate "upper" characters.
The most widely used modifier keys include the Control key, Shift key and the Alt key.

E. Remington and Sons

RemingtonRemington Typewriter CompanyE. Remington and Son
the shift key was first used in the Remington No. 2 Type-Writer of 1878; the No. 1 model was capital-only.
The Type-Writer introduced the QWERTY, designed by Sholes, and the success of the follow-up Remington No. 2 of 1878 – the first typewriter to include both upper and lower case letters via a shift key – led to the popularity of the QWERTY layout.

AltGr key

AltGrAlt GrAlt-Gr
AltGr key
AltGr is used similarly to the Shift key: it is held down when another key is struck in order to obtain a character other than the one that the latter normally produces.

Exclamation mark

exclamation point!pling
On the US layout and similar keyboard layouts, characters that typically require the use of the shift key include the parentheses, the question mark, the exclamation point, and the colon.
The appfolder can be viewed as a normal folder by double-clicking with the shift key held down.

Sticky keys

StickyKeysstickAllow user to press shortcuts one key at a time
StickyKeys
Sticky keys is an accessibility feature of some graphical user interfaces to assist users who have physical disabilities or help users reduce repetitive strain injury (or a syndrome called the Emacs Pinky). It serializes keystrokes instead of pressing multiple keys at a time, allowing the user to press and release a modifier key, such as Shift, Ctrl, Alt, or the Windows key, and have it remain active until any other key is pressed.

Mission Control (macOS)

ExposéMission ControlMac OS X's Exposé
In macOS, holding while performing certain actions, such as minimising a window or enabling/disabling Dashboard or Mission Control, makes the animation occur in slow motion. For some animations, holding will make the animation move just slightly slower, and holding will result in an extremely slow motion animation.
Using the Shift key, Mission Control can be activated in slow motion, as can Dashboard and the minimise effect and several other animations.

Keyboard layout

layoutkeyboard layoutskeyboard
On the US layout and similar keyboard layouts, characters that typically require the use of the shift key include the parentheses, the question mark, the exclamation point, and the colon.
Sebeolsik Noshift is a variant of sebeolsik which can be used without pressing the shift key.

MediaMax CD-3

MediaMax
People who do not disable AutoRun can prevent the software from loading by holding down the shift key each time a disc is inserted.

QWERTY

qwerty keyboardUS-International keyboard layoutUS keyboard layout
The QWERTY layout became popular with the success of the Remington No. 2 of 1878, the first typewriter to include both upper and lower case letters, using a shift key.

Arrow keys

WASDarrow keyarrow
Early models with arrow keys but no middle section (Home, End, etc.) placed them in one line below the right-hand Shift key in an HJKL-like fashion; later versions had a standard inverted-T layout, either in the middle block or as half-height keys at the bottom right of the main keyboard.

Bit-paired keyboard

typewriter-paired keyboardbit-paired
A bit-paired keyboard is a keyboard where the layout of shifted keys corresponds to columns in the ASCII (1963) table, archetypally the Teletype Model 33 (1963) keyboard.

Keystroke dynamics

typing rhythmidentify specific people
the sender used the left shift key, the right shift key, or the caps-lock key to make the "i" turn into a capitalized letter "I".

ASCII

7-bit ASCIIAmerican Standard Code for Information InterchangeUS-ASCII
The committee debated the possibility of a shift function (like in ITA2), which would allow more than 64 codes to be represented by a six-bit code.

LOMAK

When used in keyboard mode, it can generate any of the characters created by a standard keyboard, including Shift, Ctrl, and Alt combinations.

1878 in literature

1878
The Remington No. 2 typewriter, the first with a shift key enabling production of lower as well as upper case characters, is introduced in the United States.

Myth: The Fallen Lords

Myth
To select multiple units of different types, the player can either "shift click" (hold down the shift key and click on each individual unit) or use "band-selection" (click and hold the mouse button on a piece of ground, then drag the cursor across the screen.

Hebrew keyboard

KeyboardHebrew keyboard layout
Holding down a Shift key (or pressing Caps Lock) in Windows produces the uppercase Latin letter without the need to switch layouts.