View source for Template:YYYY beginnings or endings category header/doc

{{Documentation subpage}}
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{{Intricate template}}
{{High use|3940}}

Creates a category of the form "YYYY beginnings" or "YYYY endings", where YYYY is a 2-, 3- or 4-digit year.

e.g.

* [[:Category:95 beginnings]] {{aye}}
* [[:Category:1123 beginnings]] {{aye}}
* [[:Category:2019 beginnings]] {{aye}}

* [[:Category:79 endings]] {{aye}}
* [[:Category:486 endings]] {{aye}}
* [[:Category:2017 endings]] {{aye}}

The template detects whether the page is a "beginnings" or "endings" category, and configures the output accordingly.

==Usage==
<pre>{{YYYY beginnings or endings category header}}</pre>

No parameters needed.

== Errors ==
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: {{PAGESINCATEGORY:Errors reported by other category header templates}} pages)<br />Note that this tracking page is shared with other category header templates)

<small>{{Purge|''Purge this page to update the totals''}}</small>

Errors include:

* The page is not in the category namespace
* The page's title does not take the form "''YYYY beginnings" or "''YYYY endings"

<includeonly>{{Sandbox other||<!--
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[[Category:Chronology category header templates]]

}}</includeonly>