Template:Decade by city category header
Creates a category of the form "YYY0s by city", where YYY0s is a 4-digit decade.
e.g.
Usage
[change source]{{Decade by city category header}}
No parameters needed
Errors
[change source]If this template is used on an invalid page, then an error message is displayed, and the page is categorised in a tracking category:
- Category:Errors reported by other category header templates (population: 0 pages)
Note that this tracking page is shared with other category header templates)
Errors include:
- The page is not in the category namespace
- The page's title does not take the form "YYY0s by city"