It appears to have been at their May 13–15, 1963 meeting that the CCITT decided that the proposed ISO 7-bit code standard would be suitable for their needs if a lower case alphabet and five diacritical marks were added to it. The ASA worked with and through the CCITT to internationalize the code-set, to meet the basic needs of at least the Western European languages. : 246 Like Portuguese and Spanish, the French, German and Scandinavian languages also needed symbols in excess of the basic 26 needed for English. The first ASCII standard (X3.64-1963) did not have a tilde. The centralized ASCII tilde Serif:Ī free-standing tilde between two em dashes The tilde symbol did not exist independently as a movable type or hot-lead printing character since the type cases for Spanish or Portuguese would include sorts for the accented forms. Typewriters for Spanish typically have a dedicated key for Ñ/ñ but, as Portuguese uses Ã/ã and Õ/õ, a single dead-key (rather than take two keys to dedicate) is the most practical solution. With the latter, a mark is made when a dead key is typed, but unlike normal keys, the paper carriage does not move on and thus the next letter to be typed is printed under that accent. Keys can be dedicated to precomposed characters or alternatively a dead key mechanism can be provided. On typewriters designed for languages that routinely use diacritics (accent marks), there are two possible solutions. Ñ/ñ is present as a precomposed character only. Spanish typewriter (QWERTY keyboard) with dead keys for acute, circumflex, diaeresis and grave accents. The text of the Domesday Book of 1086, relating for example, to the manor of Molland in Devon (see adjacent picture), is highly abbreviated as indicated by numerous tildes. Medieval European charters written in Latin are largely made up of such abbreviated words with suspension marks and other abbreviations only uncommon words were given in full. This saved on the expense of the scribe's labor and the cost of vellum and ink. Such a mark could denote the omission of one letter or several letters. Thus, the commonly used words Anno Domini were frequently abbreviated to A o Dñi, with an elevated terminal with a suspension mark placed over the "n". The tilde was originally written over an omitted letter or several letters as a scribal abbreviation, or "mark of suspension" and "mark of contraction", shown as a straight line when used with capitals. Its primary use is as a diacritic (accent) in combination with a base letter but for historical reasons, it is also used in standalone form within a variety of contexts. The name of the character came into English from Spanish, which in turn came from the Latin titulus, meaning "title" or "superscription". The tilde ( / ˈ t ɪ l d eɪ, - d i, - d ə, ˈ t ɪ l d/) ˜ or ~, is a grapheme with several uses. For the notations ⟨ ⟩, / / and used in this article, see IPA Brackets and transcription delimiters. This page uses orthographic and related notations.
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