Changes
hide links to /sandbox and /testcases in the File namespace, which populated Category:Pages with missing files
| type = content
| text =
'''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}}
| 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}}