I think the section named "Pathname" is wrong. It describes the path of an URL as if every server was Apache serving static files with its default configuration. It should describe how the path is converted into a HTTP request.

For instance, the article states that "all of these go to the same place : https://example.org https://example.org/ https://example.org// https://example.org//////////////////". That's wrong. A web client send a distinct HTTP request for each case, e.g starting with `GET // HTTP/1.1`. So the server will receive distinct paths. The assertion of "going to the same place" makes no sense in the general case.