How do we add categories to tab data files? I tried using the category bar at the bottom of the page but it didn't work. ~~~~
Topic on Help talk:Tabular data
IIRC it has been discussed already on phabricator, that these JSON and TAB pages do need a /doc page mechanism, like Lua modules, to provide wikitext notes and hints and links to related documentation pages and help pages. That goes for all kinds of code pages, also CSS and JavaScript, even MediaWiki: system message pages. Such transcluded subpages can provide categories.