Template:YYYY operas category header

{{Category other|{{#ifeq: {{#invoke:String|match|s={{PAGENAME}}|pattern=^%d%d%d%d operas$|start=1|match=1|plain=false|nomatch=%%nomatch%%}}|%%nomatch%%|{{Error|Invalid page name.
Template:YYYY operas category header is for use only on category pages whose title is of the form "YYYY operas", where YYYY is a 4-digit year}}Category:Errors reported by other category header templates|{{Portal|Opera|{{FindYDCportal|{{Title year}}}}}}{{Category explanation|operas published/created/first performed in the year {{Title year}}}}

{{Category series navigation|skip-gaps=yes}}

{{Title year}}

Category:{{DECADE

Operas}}|{{Error|This page is not in the category namespace
Template:YYYY operas category header is for use only on category pages whose title is of the form "YYYY operas", where YYYY is a 4-digit year}}Category:Errors reported by other category header templates}}{{Automatic category TOC}}{{Documentation}}