Template:Help/Category
{{#ifexist: Template:PD Help Page/Help/Category|Template:PD Help Page/Help/Category|Script error }}
This template is to be transcluded in public domain help pages to categorize those pages.
Example
{{Help/Category|MediaWiki Introduction|lang=zh}}
{{Help/Category|MediaWiki Introduction}}
Default value of {{{lang}}} will be {{SUBPAGENAME}} (which will be "fr", "ja", "th", for, "Page/fr", "Page/ja", "Page/th", respectively).
If you want to specify the sort key, you may instead use the form [[Category:Cat name{{Lang subpage}}|sort key]]. This template is equivalent to [[Category:Cat name{{Lang subpage}}|{{En pagename}}]], but it compute {{If en|...}} two times, while this template compute {{If en|...}}} only once.
{{#ifeq: help/category|help/category |
[[Category:{{{1}}}|Help/Category]]|
[[Category:{{{1}}}/Help/Category |Help/Category]] }}