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For example, in Microsoft Word, shift +F2 copies text but in Excel, that keystroke combination lets you add or edit a cell comment. The Alt key (on PCs) is sometimes used in keyboard commands to ...
In computing, a keyboard shortcut is a sequence or combination of keystrokes on a computer keyboard which invokes commands in software.. Most keyboard shortcuts require the user to press a single key or a sequence of keys one after the other.
The abbreviation is not always a short form of the word used in the clue. For example: "Knight" for N (the symbol used in chess notation) Taking this one stage further, the clue word can hint at the word or words to be abbreviated rather than giving the word itself. For example: "About" for C or CA (for "circa"), or RE.
Note that a null set is not necessarily an empty set. Common notations for the empty set include "{}", "∅", and " ∅ {\displaystyle \emptyset } ". The latter two symbols were introduced by the Bourbaki group (specifically André Weil ) in 1939, inspired by the letter Ø in the Danish and Norwegian alphabets (and not related in any way to the ...
The ability to represent a null character does not always mean the resulting string will be correctly interpreted, as many programs will consider the null to be the end of the string. Thus the ability to type it (in case of unchecked user input ) creates a vulnerability known as null byte injection and can lead to security exploits.
Some fonts support multiple space characters that have different widths. A tab character typically inserts horizontal space that is based on tab stops which vary by application. A newline character sequence typically moves the render output location to the beginning of the next line. If one follows text, it does not actually result in whitespace.
Some recent embedded systems also use proprietary character sets, usually extensions to ISO 8859 character sets, which include box-drawing characters or other special symbols. Other types of box-drawing characters are block elements , shade characters, and terminal graphic characters; these can be used for filling regions of the screen and ...
Miscellaneous Symbols is a Unicode block (U+2600–U+26FF) containing glyphs representing concepts from a variety of categories: astrological, astronomical, chess, dice, musical notation, political symbols, recycling, religious symbols, trigrams, warning signs, and weather, among others.