Editing Template:Used in system

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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:{{NAMESPACENUMBER}}|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.
}}<includeonly>{{#switch:{{SUBPAGENAME}}|sandbox|doc=|#default={{#switch:{{#invoke:Effective protection level|{{#switch:{{NAMESPACE}}|File=upload|#default=edit}}|{{FULLPAGENAME}}}}|sysop|templateeditor|interfaceadmin=|#default={{category handler|all=[[Category:Pages used in system messages needing protection]]|nocat={{{nocat|}}}}}}}}}</includeonly><noinclude>

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