Template:Used in system

This template is used in system messages.
Changes to it can cause immediate changes to the Wikimedia user interface.
To avoid major disruption, any changes should be tested in the template's /sandbox or /testcases subpages, or in your own user subpage. The tested changes can be added to this page in a single edit. Please discuss changes on the talk page before implementing them.

Template documentation

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Uses Lua:

Module:High-use

Usage edit

Used in template documentation subpages to warn that a template is being used in system messages (MediaWiki namespace).