Template:Used in system

This template is used in system messages.
Changes to it can cause immediate changes to the Wikipedia user interface. To avoid large-scale disruption, any changes should first be tested in this template's /sandbox or /testcases subpage, or in your own user space. The tested changes can then be added in one single edit to this template. Please discuss any changes at the talk page before implementing them.

Template documentation[create]

Editors can experiment in this template's sandbox (create | mirror) and testcases (create) pages.
Please add categories to the /doc subpage. Subpages of this template.