Tasks about the way MediaWiki core's documentation is written. This applies to code documentation (e.g. Doxygen and JSDuck pages on doc.wikimedia.org), as well as API documentation and manuals on mediawiki.org.
This tag is for meta-level tasks about documentation. For issues about specific documentation pages avoid this tag. Instead, report those tasks to the component the documentation is about.
To find all issues relating to documentation, consider using the generic Documentation tag.