Editing Metacharacter (section)

==Other examples==
{{Anchor|Examples}}
Some other characters may have special meaning in some environments.
* In some [[Unix shell]]s the [[semicolon]] (";") is a [[Comparison of programming languages (syntax)#Statements|statement separator]].
* In [[XML]] and [[HTML]], the [[ampersand]] ("&") introduces an [[Character encodings in HTML|HTML entity]].<ref name="W3Ccer">{{cite web |title=Character entity references in HTML 4 |url=https://www.w3.org/TR/html4/sgml/entities |website=www.w3.org |publisher=[[W3C]] |access-date=2018-11-19 |language=en |date=December 24, 1999}}</ref> It also has special meaning in [[MS-DOS]]/[[cmd.exe|Windows Command Prompt]].<ref name="MSFTcso">{{cite web |title=Command shell overview |url=https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-xp/bb490954(v=technet.10) |website=docs.microsoft.com |publisher=[[Microsoft]] |access-date=2018-11-19 |language=en-us |date=September 10, 2009}}</ref>
* In some Unix shells and MS-DOS/Windows Command Prompt, the [[less-than sign]] and [[greater-than sign]] ("<" and ">") are used for [[redirection (computing)|redirection]] and the [[backtick]]/grave accent ("`") is used for [[command substitution]].<ref name="MSFTcso" />
* In many [[programming language]]s, [[String (computer science)|string]]s are [[Delimiter|delimited]] using [[Quotation mark|quotes]] (" or '). In some cases, [[escape character]]s (and other methods) are used to avoid [[delimiter collision]], e.g. "He said, \"Hello\"".
* In [[printf format string]]s, the [[percent sign]] ("%") is used to introduce format specifiers and must be escaped as "%%" to be interpreted literally.<ref name="TOGfprintf">{{cite web |title=The Open Group Base Specifications Issue 7: fprintf |url=http://pubs.opengroup.org/onlinepubs/9699919799/functions/printf.html |website=pubs.opengroup.org |publisher=[[The Open Group]] |access-date=2018-11-19 |date=2018}}</ref> In [[SQL]], the percent is used as a [[wildcard character]].<ref name="TSQL-LIKE" />
* In SQL, the [[underscore]] ("_") is used to match any single character.<ref name="TSQL-LIKE">{{cite web |title=LIKE (Transact-SQL) |url=https://docs.microsoft.com/en-us/sql/t-sql/language-elements/like-transact-sql?view=sql-server-2017 |website=docs.microsoft.com |publisher=[[Microsoft]] |access-date=2018-11-19 |language=en-us |date=March 14, 2017}}</ref>