Tilde
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The tilde is a grapheme ⟨˜⟩ or ⟨~⟩ with a number of uses. The name of the character came into English from Spanish tilde, which, in turn, came from the Latin titulus, meaning 'title' or 'superscriptio
Text of Exeter Domesday Book of 1086
An Olivetti Lettera 32 typewriter (Portuguese Model) with tilde (and circumflex) dead-key beside Ç
Spanish typewriter (QWERTY keyboard) with dead keys for acute, circumflex, diaeresis and grave accents. Ñ/ñ is present as a precomposed character only.
Carta marina showing Finnish economy, with the captions Hic fabricantur naves and Hic fabricantur bombarde abbreviated. This tilde had the shape of a macron.
Number sign
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The symbol # is known as the number sign, hash, and the pound sign and has a variety of other names. The symbol has historically been used for a wide range of purposes including the designation of an
Tilde
…requirements, replacing the up-arrow and left-arrow with diacriticals, adding diacritical meanings to the apostrophe and quotation mark, and making the number sign a dual for the tilde. — Yucca's free information site (which cites the original sources…
The abbreviation written by Isaac Newton, showing the evolution from ℔ toward #
Detail of a telephone keypad displaying the Viewdata square