Use the left key of the pair. You'll know how to do Alt-key codes on a laptop after reading this. Definition of alt key in the Definitions.net dictionary. Learn more. Dictionary ! Press and hold the alt key while you type using the numeric pad in the numerical sequence. It is commonly used in combination with other keys to produce certain effects. The AltGr, or Alternate Graphic, key is a relic from the days of text-based user interfaces (TUIs), where it was used to create box-drawing characters such as┎ and ┰. Once you release the key, the corresponding character will appear. Information and translations of alt key in the most comprehensive dictionary definitions resource on the web. ... For example, holding down the Alt key and pressing F displays the File menu if it is a current option on screen. The "Command" Keys Are Located in Between the "Alt" Keys and the Spacebar on the Standard Mac Keyboard. The "Command" Key is Important Because It, Rather Than the "Control" Key, is Generally the Key Used to Trigger Keyboard Shortcuts on Os X Computers. e.g. A modifier key on Windows keyboards that is pressed with a letter or digit key to command the computer. The alanine aminotransferase (ALT) test is a blood test that checks for liver damage. Unicode codes can not be typed. ! On it's own, the Alt key will switch the keyboard to interact with another part of the active window (ex. The Alt key (on standard keyboards) has various functions. Menu. > Use the right key of the pair. Your doctor can use this test to find out if a disease, drug, or injury has damaged your liver. See more. Luckily, we do, so it’s time to blow away the dust and get pressing. Alt key definition, either of two keys on a PC keyboard that is held down while pressing another key, as to perform a specific operation or type a special character. AltGr (alternate graving). 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