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The word arroba is also used for a weight measure in Portuguese. One arroba is equivalent to 32 old Portuguese pounds, approximately 14.7 kg (32 lb), and both the weight and the symbol are called arroba. In Brazil, cattle are still priced by the arroba – now rounded to 15 kg (33 lb). This naming is because the at sign was used to represent ...
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Upside-down marks, simple in the era of hand typesetting, were originally recommended by the Real Academia Española (Royal Spanish Academy), in the second edition of the Ortografía de la lengua castellana (Orthography of the Castilian language) in 1754 [3] recommending it as the symbol indicating the beginning of a question in written Spanish—e.g. "¿Cuántos años tienes?"
The modern metric arroba used in these countries in everyday life is defined as 15 kilograms (33 lb). In Colombia, Ecuador, and Peru the arroba is equivalent to 12.5 kilograms (28 lb). [2] In Bolivia nationally it is equivalent to 30.46 litres (6.70 imp gal; 8.05 US gal).
In the APL language, the asterisk represents the exponential and exponentiation functions, with *X representing e X, and Y*X representing Y X. In IBM Job Control Language , the asterisk has various functions, including in-stream data in the DD statement, the default print stream as SYSOUT=* , and as a self-reference in place of a procedure step ...
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The earliest editors (designed for teleprinter terminals) provided keyboard commands to delineate a contiguous region of text, then delete or move it. Since moving a region of text requires first removing it from its initial location and then inserting it into its new location, various schemes had to be invented to allow for this multi-step process to be specified by the user.
In classic Mac OS and Mac OS X (macOS), the key combination Option Shift ? produces an inverted question mark. In shell and scripting languages, the question mark is often utilized as a wildcard character: a symbol that can be used to substitute for any other character or characters in a string. In particular, filename globbing uses "?"