I have found mentions of various Stack Exchange engine URLs (/question/NNNN, [/question/NNNN/question-title-spelled-out][1], /answer/NNNN, [/user/NNNN][2], [/q/NNNN][3], /a/NNNN, [/u/NNNN][4], etc.)  scattered around in different places, including sometimes just-in-passing mentions that a link can also including a user id, [/a/NNNN/UUUU][5] or can have suffixes such as [?lastactivity][6] or [?rq=][7].

Is there some unified location where all these sorts of URLs are documented?

(I did find https://api.stackexchange.com/docs which documents the somewhat-similar-looking API calls, but am trying to find documentation for the regular Stack Exchange engine website URLs instead.)


  [1]: https://meta.stackexchange.com/questions/155878/stack-overflow-url-format
  [2]: https://meta.stackexchange.com/a/22046
  [3]: https://meta.stackexchange.com/a/164197
  [4]: https://meta.stackexchange.com/q/244784
  [5]: https://meta.stackexchange.com/a/305392
  [6]: https://meta.stackexchange.com/q/313428
  [7]: https://meta.stackexchange.com/questions/313471/add-canonical-urls-to-avoid-duplicate-search-engine-results?noredirect=1&lq=1#comment1057237_313471