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Punctuation marks are marks indicating how a piece of written text should be read (silently or aloud) and, consequently, understood. [1] The oldest known examples of punctuation marks were found in the Mesha Stele from the 9th century BC, consisting of points between the words and horizontal strokes between sections.
The following is a handy reference for editors, listing various common spelling differences between national varieties of English. Please note: If you are not familiar with a spelling, please do some research before changing it – it may be your misunderstanding rather than a mistake, especially in the case of American and British English spelling differences.
The Puerto Rico Aqueducts and Sewers Authority was established by Law 40 of May 1, 1945. [2] In 1995 the agency was privatized under the administration of governor Pedro Rosselló until 2002 under governor Sila María Calderón when the contract ended. [3] The aftermath of Hurricane Maria left most of the island without water service for weeks.
A Dictionary of Modern English Usage (1926), by Henry Watson Fowler (1858–1933), is a style guide to British English usage and writing. It covers a wide range of topics that relate to usage, including: plurals, nouns, verbs, punctuation, cases, parentheses, quotation marks, the use of foreign terms, and so on.
Some sources distinguish "diacritical marks" (marks upon standard letters in the A–Z 26-letter alphabet) from "special characters" (letters not marked but radically modified from the standard 26-letter alphabet) such as Old English and Icelandic eth (Ð, ð) and thorn (uppercase Þ, lowercase þ), and ligatures such as Latin and Anglo-Saxon Æ (minuscule: æ), and German eszett (ß; final ...
Norma Oficial Mexicana logo. The Norma Oficial Mexicana (Official Mexican Standard), abbreviated NOM, is the name of each of a series of official, compulsory standards and regulations for diverse activities in Mexico.
The Dirección General de Normas (General Directorate of Standards) is an administrative unit under the Normativity, Competitiveness, and Competition Unit of the Secretariat of Economy in Mexico. It is responsible for exercising the powers conferred by the Federal Law on Metrology and Standardization (repealed), the Law on Quality ...
The refractive index of liquid water (1.333 at 20 °C (68 °F)) is much higher than that of air (1.0), similar to those of alkanes and ethanol, but lower than those of glycerol (1.473), benzene (1.501), carbon disulfide (1.627), and common types of glass (1.4 to 1.6). The refraction index of ice (1.31) is lower than that of liquid water.