Template:Used in system
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| File:OOjs UI icon notice-warning.svg | This template is used {{#if:|{{{1}}}|in system messages}}. Changes to it can cause immediate changes to the MediaWiki user interface. To avoid large-scale disruption, any changes should first be tested in this template's [[{{#switch: Used in system | doc | sandbox = Template:Used in system
| #default = Template:Used in system
}}/sandbox|/sandbox]] or [[{{#switch: Used in system
| doc | sandbox = Template:Used in system
| #default = Template:Used in system
}}/testcases|/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 {{#if:|at [[{{{2}}}]]|on the [[{{#switch: Used in system
| doc | sandbox = Template talk:Used in system
| #default = Template talk:Used in system
}}|talk page]]}} before implementing them. |
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