Sources

Every document we quoted, grouped by who published it. The number is how many answers on this site come from it.

first party55

The operator of the thing being described, or the body that defines it.

advocacy4

A body that exists to advise or represent people in this field, without operating or selling in it. Often the clearest writing on a subject, and still not the source of the rule.

vendor13

A company selling something in the field it is describing.

other1

Anything else, including personal sites and archives.