Magic words (including parser functions, variables and behavior switches) are features of wiki markup that give instructions to Wikipedia's underlying MediaWiki software. For example, magic words can suppress or position the table of contents, disable indexing by external search engines, and produce output dynamically based on the current page or on user-defined conditional logic. Some of these features are especially useful for templates.
This page is a quick reference for magic words. For more information, refer to the main MediaWiki documentation:
The names of magic words are purposely chosen to be unlike the names of templates, and vice versa. Many parser function names will begin with a # (pound), but template names will not start with a #, and probably not end in a : (colon), or be all-uppercase.