Editing Quotation marks in English (section)

=== Non-language-related usage ===
Straight quotation marks (or italicised straight quotation marks) are often used to [[Typographic approximation|approximate]] the [[Prime (symbol)|prime]] and [[double prime]], e.g. when signifying feet and inches or [[arcminute]]s and [[arcsecond]]s. For instance, 5&nbsp;feet and 6&nbsp;inches is often written 5'&nbsp;6"; and 40&nbsp;degrees, 20&nbsp;arcminutes, and 50 arcseconds is written 40°&nbsp;20'&nbsp;50". When available, however, primes should be used instead (e.g. 5{{prime}}&nbsp;6{{pprime}}, and 40°&nbsp;20{{prime}}&nbsp;50{{pprime}}). Prime and double prime are not present in most [[code page]]s, including [[ASCII]] and [[Latin-1]], but are present in [[Unicode]], as characters {{unichar|2032|PRIME}} and {{unichar|2033|DOUBLE PRIME}}. The [[List of XML and HTML character entity references#Character entity references in HTML|HTML character entity references]] are {{Code|&prime;}} and {{Code|&Prime;}}, respectively.

Double quotation marks, or pairs of single ones, also represent the [[ditto mark]].

Straight single and double quotation marks are used in most [[programming language]]s to delimit [[String (computer science)|strings]] or literal [[character (computing)|characters]], collectively known as [[string literal]]s. In some languages (e.g. [[Pascal (programming language)|Pascal]]) only one type is allowed, in some (e.g. [[C (programming language)|C]] and its derivatives) both are used with different meanings and in others (e.g. [[Python (programming language)|Python]]) both are used interchangeably. In some languages, if it is desired to include the same quotation marks used to delimit a string inside the string, the quotation marks are doubled. For example, to represent the string {{samp|eat 'hot' dogs}} in Pascal one uses <code><nowiki>'eat ''hot'' dogs'</nowiki></code>. Other languages use an [[escape character]], often the [[backslash]], as in <code><nowiki>'eat \'hot\' dogs'</nowiki></code>.

In the [[TeX]] typesetting program, left double quotes are produced by typing two back-ticks ({{Code|``}}) and right double quotes by typing two apostrophes ({{Code|''}}). This is a continuation of a typewriter tradition of using ticks for opening quotation marks; see {{section link|Quotation mark|Typewriters and early computers}}.