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54-537: DCAS may be: DCAS keys, control keys on the computer keyboard, see Arrow keys § DCAS keys Deputy Chief of the Air Staff (disambiguation) Derive computer algebra system Double compare-and-swap Downloadable Conditional Access System New York City Department of Citywide Administrative Services Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with

108-425: A diamond on QWERTY keyboards. In this layout, three of the four keys happen to correspond to the compass directions "West", "East" and "South". These games usually assign both "N" and "3" to "North". AZERTY users will use the "ZQSD" combination instead of "WASD", since those are the keys in place of WASD on a QWERTY keyboard. Depending on the configuration, "QAOP" may either still work or be vertically inverted. On

162-416: A result. Layouts such as Shift Z Ctrl X , where ⇧ Shift is up and Ctrl is down, allow all direction keys to be used in any combination, without the delay of changing finger position. But the use of modifier keys can be problematic, as some games do not allow mapping of these keys. Professional Counter Strike:Global Offensive player Fashr is known to use somewhat unorthodox keybindings. Using

216-417: A right-handed mouse . During the early days of gaming, this was not a problem as the mouse was not used; the arrow keys controlled both movement ↑ ↓ as well as looking around ← → , with strafing done using modifier keys (usually Alt + ← → ). However, the introduction of mouselook , a system that let one use the mouse to look around both vertically and horizontally, enabled

270-586: A standard inverted-T layout, either in the middle block or as half-height keys at the bottom right of the main keyboard. The arrow keys are used in many applications to do different things such as: Although the "arrow keys" provide one convention for cursor movement on computers, there are also other conventions for cursor movement that use entirely different keys. This cursor key layout was seen in Sinclair ZX80 , ZX81 , and ZX Spectrum home computer designs. These machines had 40-key keyboards with number keys on

324-432: Is ASD-SPACE. Commonly used in 2D-based fighting games , ASD-SPACE maps A , S , and D to "left", "down", and "right" movement, while the spacebar is used for "up" (jumping). This allows an easier access to "360 degree" motions than a normal inverted-T layout, as well as being more ergonomic than simply placing all directions in a single row (ex. ASDF). There is even a "stickless" arcade controller based around

378-515: Is DCAS (sometimes called ASDC). In this configuration, D and C control forward and backward motion, while A and S control side-stepping (strafing). Typically the Alt key is utilized for crouching instead of the Ctrl key, as it is more easily reached when the hand is positioned for DCAS. When Bungie's first-person shooter Marathon was released in 1994, it featured up/down look control and

432-419: Is a set of four keys on a QWERTY or QWERTZ computer keyboard that mimic the inverted-T configuration of the arrow keys. These keys are most commonly used to control the player character 's movement in computer games . W / S control forward and backward, while A / D control strafing left and right. The main reason for this arrangement is that the arrow keys are not ergonomic to use with

486-546: Is distinct from "arrow key" in that the former term may refer to any of various keys on a computer keyboard designated for cursor movement, whereas "arrow keys" generally refers to one of four specific keys, typically marked with arrows. Arrow keys are typically located at the bottom of the keyboard to the left side of the numeric keypad , usually arranged in an inverted-T layout but also found in diamond shapes and linear shapes. Arrow keys are commonly used for navigating around documents and for playing games. The inverted-T layout

540-457: Is mainly because these games usually have quite a large number of keys needed to control the vehicle properly and the number pad will have plenty of keys for that particular use. Another reason this is commonly used is because left-handed players will find this a more comfortable position than the IJKL keys (see above), and the number pad has fewer keys around it, thus it is less likely the player will hit

594-481: Is that it allows the user to use the left-hand thumb to press the space bar (often the jump command) and the left-hand little finger to press the Ctrl or ⇧ Shift keys (often the crouch and sprint commands), as opposed to the arrow keys which lack other keys in proximity to press. Ctrl and ⇧ Shift were chosen partly because they are larger keys and thus easier to hit, but primarily because in older systems

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648-573: The F key home row marker (available on most standard keyboards) to easily return to position with the index finger. Moreover, these keys are compatible with both QWERTY and AZERTY keyboard layouts, which is a major plus if the game is also released in France or Belgium. Perhaps the earliest game to use ESDF was Crossfire (1981), which used the keys for firing in multiple directions. Dan "vise" Larsen from Quake Team Deathmatch clan "clan Kapitol" popularized ESDF versus "WASD", explaining that

702-550: The Digital Equipment Corporation LK201 keyboard from 1982. Most Commodore 8-bit computers used two cursor keys instead of four, with directions selected using the shift key. The original Macintosh had no arrow keys at the insistence of Steve Jobs , who felt that people should use the mouse instead. They were deliberately excluded from the Macintosh launch design as a forcing device, acclimating users to

756-465: The Dvorak keyboard layout , "WASD" is ",AOE". Left-handed players may use the numeric keypad instead. A somewhat uncommon variant is YGHJ which while requiring the keyboard to be turned slightly clockwise, can result in the thumb resting comfortably upon the right Alt key and the little finger resting on C . This can be useful in games that utilize both jump and sprint functions as it allows

810-576: The Esc key entered a mode where pressing the I , J , K or M keys would move the cursor without altering the input buffer. After exiting this mode by pressing Escape again, normal behavior would resume. This made it easy to edit lines of BASIC code by listing them, then re-inputting them with edits interspersed. The Apple II and Apple II Plus originally had left and right arrow keys but no up and down arrow keys. Many programs written for these computers used A and Z to substitute for

864-511: The QL -style keyboard on later Spectrum + and + 128K models introduced various dedicated keys including arrow keys either side of the space bar (left/right in a pair to its immediate left, and up/down to the immediate right) and removed related labels, either method produced the same signals and there was no difference between which of the alternatives was used as far as software was concerned. WASD (,AOE on Dvorak keyboards; ZQSD on AZERTY keyboards)

918-659: The WordStar word processor and related applications, in combination with the Control key . These keys were also used, and had arrows printed on them on the TI-99/4A computer. The Model F keyboard that came with the original IBM PC didn't have dedicated arrow keys, and instead used the 8426 keys with Num Lock turned off. Therefore this was the scheme used by the earliest DOS games. The numpad or number pad keys are used quite often, but are used mostly in driving simulator games. This

972-456: The Workbench (operating system), but most games require a mouse or joystick. The use of arrow keys in games has come back into fashion from the late 1980s and early 1990s when joysticks were a must, and were usually used in preference to arrow keys with some games not supporting any keys. It can be used instead of WASD keys, to play games using those keys. The inverted-T layout was popularized by

1026-612: The colon . When the Caps Lock key is engaged, the Shift key may be used to type lowercase letters on many operating systems , though not on macOS . 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

1080-557: The typewriter , where one had to press and hold the button to shift up the case stamp to change to capital letters; the Shift key was first used in the Remington No. 2 Type-Writer of 1878; the No. 1 model was capital-only. 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

1134-522: The "s" key is often used to either "select" or "shoot", depending upon the application. This layout also appears on the numeric keypads of some keyboards, using 8462 (including 7913). Vaguely related is the ZXC layout, used in many freeware games, and a common setup for emulation and older 2D gaming using a keyboard. A few games from the 1980s, such as the Phantasie series , use the "3WES" layout, which forms

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1188-502: The Q/A keys for up/down or forward/backwards movement. With SPACE being located at the bottom right of the original rubber-keyed Spectrum, the M or sometimes N key would be used for fire/action; on later models the SPACE bar would be used. QAOP had its own variations, such as ZXKM or WELP. Many BBC Micro games used the keys ZX*? respectively for left, right, up, and down (with "*" being

1242-465: The Right Mouse to move forward, Semicolon to move backwards, Comma for strafing left and a Full Stop to strafe right. Shift key The Shift key ⇧ Shift is a modifier key on a keyboard , used to type capital letters and other alternate "upper" characters. There are typically two Shift keys, on the left and right sides of the row below the home row . The Shift key's name originated from

1296-450: The Shift key can have many more uses: On some keyboards, if both Shift keys are held down simultaneously only some letters can be typed. For example, on the Dell keyboard Model RT7D20 only 16 letters can be typed. This phenomenon is known as "masking" and is a fundamental limitation of the way the keyboard electronics are designed. The following is a list of actions involving the Shift key for

1350-675: The advantage of letting touch-typists move the cursor without taking their fingers off of the home row. Examples of games that use HJKL are the text-based "graphic" adventures like NetHack , the Rogue series, and Linley's Dungeon Crawl . It is also used by some players of the Dance Dance Revolution clone StepMania , where HJKL corresponds directly to the order of the arrows. Gmail , Google Labs ' keyboard shortcuts and other websites use J and K for "next" and "previous". Another old-style variation that spawned from games like Quake

1404-463: The advantages of WASD and mouselook were recognized over a purely keyboard-based control system. In the same year that Castle Wolfenstein was released, 1981, the game Wizardry used the AWD keys for movement in a first-person dungeon. Both the programmers of Castle Wolfenstein and Wizardry were users of the earlier PLATO system where the game Moria used the AWD keys. Another advantage of WASD

1458-408: The camera, such as some city-building games and economic simulation games . The ESDF variation is an alternative to WASD and is sometimes preferred because it provides access to movement independent keys for the little finger ( Q , A , Z ) which generally allows for more advanced manual binding . Incidentally, it allows the left hand to remain in the home row with the advantage of

1512-552: The combination IJKM used as the standard control key combination, which was more logically arranged, if far less ergonomic than an inverted-T. In addition, on the Apple II , special support existed in ROM for Escape mode . At the Applesoft BASIC prompt, using the right and left arrow keys to move the cursor would add/remove characters the cursor passed over to/from the input buffer. Pressing

1566-466: The computer could only recognize a couple of alphanumeric key presses, a limitation circumvented by the use of modifier keys . In later games, the usage of the E key to interact with items or open up the inventory was also popularized due to its location next to the WASD keys, allowing players to reach it quickly. Telengard (1982) may be the first game to use WASD keys; Dark Castle (1986) may be

1620-510: The concept, called the Hitbox. Another, close, variation is the WQSE combination, which follows the belief that the index and ring fingers' natural and more ergonomic positions when the middle finger is on W are Q and E rather than A and D , respectively. This can be attested to by the fact that the arrow keys were partly designed in the inverted-T shape in order to avoid having

1674-585: The corresponding control characters Ctrl + H , Ctrl + J , Ctrl + K , and Ctrl + L when sent to the terminal, moving the cursor left, down, up, and right, respectively. (The Ctrl + H and Ctrl + J functions were standard, but the interpretations of Ctrl + K and Ctrl + L were unique to the ADM-3A.) This key arrangement is often referred to as "vi keys". HJKL keys are still ubiquitous in newly developed Unix software even though today's keyboards have arrow keys. They have

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1728-530: The fingers to rest on smaller keys than ⇧ Shift and Space. The YGHJ configuration also places the hand closer to the center of the QWERTY section of the keyboard, potentially opening up the entire board to custom keybindings . The game QWOP uses the control scheme "QWOP" to control Qwop's arms and legs. the Q and W keys control Qwop's thighs while the O and P keys control Qwop's calves making an intentionally difficult control system as

1782-429: The first to use WASD keys and mouse for control. Half-Life (1998) was one of the first mainstream games to use WASD by default. After being popularized by first-person shooters , WASD became more common in other computer game genres as well. Many of the games that have adopted this layout use a first-person or over-the-shoulder third-person perspective. Some games that use overhead camera views also use WASD to move

1836-564: The index finger naturally over the D key when the left arm rests down to the left of the keyboard. Another variation is EWDF, which is the same shifted right one key, as in ESDF. SAZD is a slight variation on WQSE and WQSD, in that it is both ergonomic and rotated, but gives the fingers closer proximity to the ⇧ Shift and SPACE keys. QAOP, sometimes called OPQA, dates back to the ZX Spectrum . The O/P keys were used for left/right movement, and

1890-400: The key above and right of "?", where "@" is on modern UK keyboards ). In each case, one hand controls left/right, and the other hand controls up/down movement. A further variation is used when two players use the keyboard at the same time; for example, Gauntlet uses the combination 1QSD for Player 1, and 8IKL for Player 2. The ESDX keys (known as the "cursor movement diamond") were used in

1944-518: The missing up and down keys. The IJKM combination was also popular on these computers. Another fairly common variant on these machines was the combination of RETURN and / (slash) with the left and right arrows, as those four keys roughly form a diamond on the keyboard; while the right ⇧ Shift key would be in the more natural position for "down", pressing ⇧ Shift alone was not detectable by software on an unmodified Apple II or Apple II plus. All these keys fell somewhat out of favor after

1998-402: The new mouse input device and inducing software developers to conform to mouse-driven design rather than easily porting previous terminal -based software to the new platform. Arrow keys were included in later Apple keyboards. 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

2052-400: The option to fully control turning and aiming by mouse (a feature later popularized by id's Quake as mouselook/freelook ). However, it did not include a set of default controls to handle this. With WASD not yet a well-known standard, some people devised their own control schemes to handle combined keyboard movement with mouse aiming; DCAS was one such control scheme. Like WASD, DCAS allows

2106-456: The player gains three additional keys to bind the Quake game's controls to. It is the default configuration for several games, such as Tribes 2 . The game Blackthorne used a combination of arrow keys for movement and ESDF for actions. Some players use RDFG or TFGH to give access to even more keys ( S and X for the little finger). Another alternate to the WASD shooter movement style

2160-400: The player to easily utilize the left modifier keys; this is advantageous because on most keyboards, the circuitry is better at tracking multiple key-presses simultaneously if some of them are modifier keys. But unlike WASD, the position of the left hand for DCAS gameplay is very similar to the left hand's position on the home row keys. This is very comfortable for right-handed players and seen as

2214-507: The player to perform techniques such as smooth circle strafing , which, although possible with the keyboard, was difficult to perform and resulted in jagged movement. Since the mouse was now used for looking, the ← and → keys for looking would be redundant and thus were altered to become strafe keys. The style was popularized in competitive play in Quake and subsequently QuakeWorld , notably by professional player Dennis Fong , where

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2268-509: The primary advantage over using WASD, but it is ill-suited for left-handed mousing. Two early games that used IJKL were Crossfire (1981) and Lode Runner (1983). IJKL is used by a growing number of browser games . These games cannot use the arrow keys because many browsers' windows will scroll if the arrow keys are used, thus hindering gameplay. This is a problem specific to DHTML / JavaScript games. IJKL, like WASD, are arranged in an ergonomic inverted T shape, and, since they are used by

2322-499: The release of the Apple IIe , which had a full set of arrow keys. HJKL is a layout used in the Unix computer world, a practice spawned by its use in the vi text editor. The editor was written by Bill Joy for use on a Lear-Siegler ADM-3A terminal, which places arrow symbols on these letters, since it did not have dedicated arrow keys on the keyboard. These correspond to the functions of

2376-479: The right hand, adjustment is easy for people who commonly use the arrow keys. Also, in many games that also use the WASD keys, the IJKL keys are sometimes used as a secondary player control for games that have multiplayer. Devil May Cry 4 by Capcom utilizes IJKL as the player's action keys (such as Melee Attack, Ranged Attack, Special Attack etc.) as an alternative to mouse-driven actions. Some older computer games, especially those on 8-bit platforms, often had

2430-482: The side buttons possibly directly underneath other keys. It also has the advantage that there is less distance needed to travel to reach the number keys. For similar reasons, some gamers use the WQSD combination (which is WASD with the A key moved up to Q , or WQSE with the E moved down to D ). For players who prefer to keep the keyboard centered on the body, this results in less wrist rotation, as it places

2484-528: The symbol ISO-7000-251. In Unicode 6.1, the character approximating this symbol best is U+21E7 upwards white arrow (⇧). 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. This symbol also is used in texts to denote the Shift key. On computer keyboards , as opposed to typewriter keyboards ,

2538-478: The title DCAS . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=DCAS&oldid=1127030960 " Category : Disambiguation pages Hidden categories: Short description is different from Wikidata All article disambiguation pages All disambiguation pages Arrow keys#DCAS keys The term "cursor movement key"

2592-400: The top row. Each of the number keys had secondary functions requiring simultaneous use of a shift key ( CAPS SHIFT in particular from Spectrum onwards) to activate them. Of these, 5 to 8 were designated as cursor control keys and were labelled with left-, down-, up-, and right-arrow symbols printed on or directly above them in a colour matching the relevant shift key. The sequence

2646-570: The turn commands useless because the mouse can act as a turning device, and so they assign S and F to the sidestep commands and leave the turn commands unassigned. The second, and probably more prominent reason is, in assigning both the turn and strafe commands, performing movements and dodges can be much more confusing, so newcomers tend to not prefer this key setup. Though no longer widely used, many FPS veterans and tournament players still employ this key setup. This variant adopted to newer games using mouse-look doesn't really need worry about

2700-539: The turn left and turn right keys. Instead S = strafe left, D = strafe right, A = backpedal, and space or F = forward. This is a more natural feel on the keyboard as your fingers rest on the home row . The comfort and usability points from ESDF apply here. Notice that jump is left out, that is because in games like Quake jump was usually MOUSE2. With more alternate fire and aim-down-sights oriented games today you may have to play with F , SPACE, and MOUSE2 on what you want them to do. A similar layout

2754-611: The wrong key by mistake. Another variation is WAXD, using either 4 or 8 keys surrounding the "s" key. Eight directional arrows were printed on the keysets of PLATO terminals developed in the 1960s and 1970s, and many games (including Empire , Dogfight, and more than a dozen dungeon games such as Avatar ) utilize this layout. The TUTOR language display editor, character set (bitmap) editor, and line set editor also use these keys on that system and its successors. For ballistic targeting, key combinations (e.g. "we", "de", etc.) are used to get angles in multiples of 22.5 degrees. In many programs,

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2808-654: Was adopted from Lear-Siegler/vi style (see HJKL below). The Jupiter Ace keyboard was similar but with up and down functions swapped. The underlying character codes varied between machines, but in Spectrum and Ace designs the order of up and down keys on the keyboard reflected which had the lesser and greater numeric value. In some software for these machines (eg. games), the unshifted 5 , 6 , 7 , and 8 keys were directly associated with direction control when they had no other purpose, as this meant less complicated keypress detection routines could be used. Although

2862-504: Was popularized by the Digital Equipment Corporation LK201 keyboard from 1982. Before the computer mouse was widespread, arrow keys were the primary way of moving a cursor on screen. Mouse keys is a feature that allows controlling a mouse cursor with arrow keys instead. A feature echoed in the Amiga whereby holding the Amiga key would allow a person to move the pointer with the cursor keys in

2916-494: Was the SDF-SPACE layout. In this layout, S = turn left, D = forward, F = turn right, space = backpedal, E = strafe left and R = strafe right. This layout allows the player to aim with the mouse while strafing (sidestepping), turning and running or backpedaling all at once creating slightly more complex movements. This variation is not favoured any longer for two main reasons. First, because many players deem

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