Used to create categories of the form "Theatres completed in the YYY0s" or "Theatres demolished in the YYY0s", where YYY0s is a decade.

e.g. Category:Theatres completed in the 1980s or Category:Theatres demolished in the 2010s

{{Theatres actioned in decade category header}}

No parameters are needed.

• Template:Theatres actioned in year category header
• Template:Theatres actioned in century category header