"Template:Dablink" redirects here. For the maintenance template, seeTemplate:Dablinks.
This template is used in system messages, and onapproximately 704,000 pages, or roughly 1% of all pages. Changes to it can cause immediate changes to the Wikipedia user interface. To avoid major disruption and server load, any changes should be tested in the template's/sandbox or/testcases subpages, or in your ownuser subpage. The tested changes can be added to this page in a single edit. Please discuss changes on thetalk page before implementing them.
Broadly speaking, a hatnote should answer a reader's question (maybe preemptively):Am I on the right page?
Function
This template is primarily used to add a correctly formattedhatnote to a page. Often, but not always, this is adisambiguation link at the top of article pages. It places an HTMLdiv- /div block around the text entered as its only argument, which provides standardized formatting (contents are indented and italicized in most displays); it also isolates the contained code to make sure that it is interpreted correctly.
This template is also used as the "meta-template" for additional specialized disambiguation link templates; seeCategory:Hatnote templates for a list.
The template does not automatically create links of any kind. Links and other desired formatting must be explicitly added, using normalWikipedia markup.
extraclasses – any extra CSS classes to be added, for example, the{{see also}} template adds the classes "|extraclasses=boilerplate seealso".
selfref – If set to "yes", "y", "true" or "1", adds the CSS class "selfref". This is used to denote self-references to Wikipedia. SeeTemplate:Selfref for more information.
category – If set to "no", "n", "false", or "0", suppresses the error tracking category (Category:Hatnote templates with errors). This has an effect only if the leftmost parameter (the hatnote text) is omitted.
If you see this error message, it is for one of four reasons:
No parameters were specified (the template code was{{hatnote}}). Please use{{hatnote|text}} instead.
Some parameters were specified, but the hatnote text wasn't included. For example, the template text{{hatnote|extraclasses=seealso}} will produce this error. Please use (for example){{hatnote|text|extraclasses=seealso}} instead.
The hatnote text was specified, but that text contains an equals sign ("="). The equals sign has a special meaning in template code, and because of this it cannot be used in template parameters that do not specify a parameter name. For example, the template code{{hatnote|2+2=4}} will produce this error. To work around this, you can specify the parameter name explicitly by using1= before the hatnote text, like this:{{hatnote|1=2+2=4}}.
You tried to accessModule:Hatnote directly by using{{#invoke:hatnote|hatnote|text}}. Use of #invoke in this way has been disabled for performance reasons. Please use{{hatnote|text}} instead.
If you see this error message and are unsure of what to do, please post a message onTemplate talk:Hatnote, and someone should be able to help you.
Template for creating a standard Wikipedia hatnote. A hatnote is a short note placed at the top of an article to provide disambiguation of closely related terms or summarise a topic, explaining its boundaries.
This field should contain the text that will be displayed in the hatnote.
String
required
Extra classes
extraclasses
Extra CSS classes to be added to the <div> tags surrounding the hatnote text.
Line
optional
Self reference
selfref
Set to "yes" if the hatnote text is a self-reference to Wikipedia that would not make sense on mirrors or forks of the Wikipedia site. (E.g. "For the Wikipedia Sandbox, see [[WP:SAND]]".)
Line
optional
Category
category
Set to "no", "n", "false", or "0" to suppresses the error tracking category (Category:Hatnote templates with errors). This only has an effect if the hatnote text is omitted.
