+A regular expression (regex) is a powerful sequence of characters defining a search pattern. It serves as a mini-language to efficiently find, replace, or manipulate specific [Text](/wiki/text) and identify complex [Pattern Matching](/wiki/pattern_matching) structures within data.
+## See also
+- [Programming Language](/wiki/programming_language)
+- [String](/wiki/string)
+- [Text Editor](/wiki/text_editor)