Template:Documentation
Cannot load https://commons.wikimedia.org/wiki/Data:I18n/Documentation.tab. See https://www.mediawiki.org/wiki/Extension:JsonConfig#Supporting_Wikimedia_templates'''.[ [https://testwiki.wiki/wiki/Template:Documentation/doc Lua error: Module:TNT:172: '''Missing JsonConfig extension, or not properly configured; Cannot load https://commons.wikimedia.org/wiki/Data:I18n/Documentation.tab. See https://www.mediawiki.org/wiki/Extension:JsonConfig#Supporting_Wikimedia_templates'''.] · [https://testwiki.wiki/index.php?title=Template:Documentation/doc&action=edit Lua error: Module:TNT:172: '''Missing JsonConfig extension, or not properly configured; Cannot load https://commons.wikimedia.org/wiki/Data:I18n/Documentation.tab. See https://www.mediawiki.org/wiki/Extension:JsonConfig#Supporting_Wikimedia_templates'''.] · [https://testwiki.wiki/index.php?title=Template:Documentation/doc&action=history Lua error: Module:TNT:172: '''Missing JsonConfig extension, or not properly configured; Cannot load https://commons.wikimedia.org/wiki/Data:I18n/Documentation.tab. See https://www.mediawiki.org/wiki/Extension:JsonConfig#Supporting_Wikimedia_templates'''.] · [https://testwiki.wiki/index.php?title=Template:Documentation&action=purge Lua error: Module:TNT:172: '''Missing JsonConfig extension, or not properly configured; Cannot load https://commons.wikimedia.org/wiki/Data:I18n/Documentation.tab.
See https://www.mediawiki.org/wiki/Extension:JsonConfig#Supporting_Wikimedia_templates'''.] ]Lua error: Module:TNT:172: '''Missing JsonConfig extension, or not properly configured; Cannot load https://commons.wikimedia.org/wiki/Data:I18n/Lua banner.tab. See https://www.mediawiki.org/wiki/Extension:JsonConfig#Supporting_Wikimedia_templates'''. This is the {{Documentation}} template, used on almost every template page to contain that template's documented instructions and information.
For detailed instructions on how and when to use this template, see w:Wikipedia:Template documentation.
This template displays a green documentation box like you are seeing now and automatically loads the content from a /doc subpage. It can also load the content from other places if instructed to.
This template is intended for documenting templates and other pages that are transcluded onto other pages. It can be used in the template namespace and most other namespaces.
Use of this template allows templates to be protected where necessary, while allowing anyone to edit the documentation and categories.