Downloads that are required for a section to return results

MJ. Smith
MVP Posts: 54,201
We are getting more questions of the type "why do I get no results in section x" to which the answer is "resource y" must be downloaded. Please provide a list of such requirements either in the Help file or as a list we can incorporate into the wiki.
I would give extra points for a similar list of required datasets matched to their sections.
Orthodox Bishop Alfeyev: "To be a theologian means to have experience of a personal encounter with God through prayer and worship."; Orthodox proverb: "We know where the Church is, we do not know where it is not."
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