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The value of an element’s accesskey attribute is the key the user will press (typically in combination with one or more other keys, as defined by the browser) in order to activate or focus that element. Though the accesskey attribute sets the key that can be pressed, it does not automatically notify the user of the bound access key.
Key combinations are used to enter BASIC keywords. Some interpreters, such as the Sinclair systems, basically had the user do the tokenization by providing special keystrokes to enter reserved words. The most common commands need one keystroke only; for example, pressing only P at the start of a line on a Spectrum produces the full command PRINT .
The previous Minuteman III command and control system, designated Command Data Buffer or CDB, required over 20 hours to retarget the entire Minuteman force and 30 minutes to retarget a single ICBM. REACT system needs less than 10 hours to retarget all missiles, while individual missiles can be retargeted in matter of minutes.