|This is a documentation subpage for మూస:!.|
It contains usage information, categories and other content that is not part of the original మూస page.
This template was used for many years to provide a pipe symbol "|" in template code in special circumstances. It was replaced with the parser function that looks the same in 2014.
Because it is still possible to invoke this template, and to keep compatibility for other wikis, which may copy their template structure from this wiki, and run on earlier versions of the Mediawiki software, this template is preserved as functional.
Apart form these use cases it is purely of historical interest.