1,178 bytes added,
22:08, 29 November 2017 m{{ombox
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'''This {{lcfirst:{{NAMESPACE}}}} is used {{#if:{{{1|}}}|{{{1}}}|in system messages}}.''' <br> Changes to it can cause immediate changes to the Wikipedia user interface. {{#ifeq:{{NAMESPACE}}|{{ns:6}}||To avoid large-scale disruption, any changes should first be tested in this {{lcfirst:{{NAMESPACE}}}}'s [[{{#switch: {{SUBPAGENAME}}
| doc | sandbox = {{SUBJECTSPACE}}:{{BASEPAGENAME}}
| #default = {{SUBJECTPAGENAME}}
}}/sandbox|/sandbox]] or [[{{#switch: {{SUBPAGENAME}}
| doc | sandbox = {{SUBJECTSPACE}}:{{BASEPAGENAME}}
| #default = {{SUBJECTPAGENAME}}
}}/testcases|/testcases]] subpage, or in your own [[Wikipedia:Subpages#How to create user subpages|user space]]. The tested changes can then be added in one single edit to this {{lcfirst:{{NAMESPACE}}}}.}} Please discuss any changes {{#if:{{{2|}}}|at [[{{{2}}}]]|on the [[{{#switch: {{SUBPAGENAME}}
| doc | sandbox = {{TALKSPACE}}:{{BASEPAGENAME}}
| #default = {{TALKPAGENAME}}
}}|talk page]]}} before implementing them.
}}<noinclude>
{{documentation}}
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