Template:Usercat-1

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Parameters

 * 1) State/Province/Region
 * 2) Parent category link (e.g., "Wikipedians in ")
 * 3) Name of the parent country (this will be used as the sort key within the parent category)
 * 4) Optional Wikitext appended after the link to The State/Province/Region, so you can add regional noticeboard links, etc. It defaults to a period.

Example
To create a category for wikipedians in Massachusetts in the United States:

Note that in the below example output, the "To add yourself to this list..." segment is incorrect because it uses the   variable. When you place this on the category page, it will work correctly.

Errors
If this tenplate with a second parameter which does not begin with "Wikipedians in", then an error message is generated. These errors are tracked:

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 * Category:Template Usercat-1 with invalid parameter (population )