...fits into one line of code. Specifically it's http://user:password@mydomain.org. It doesn't take you anywhere on the web. Technically, it's merely an example of how to provide a username and password for a Mercurial (source code) repository on a single line. Practically, it's a bit more than that, but that's not germane to the moment.
One pithy little nugget of information--the key to a lock I hadn't thought needed to be picked--is still evidence that this 1/29,256th of my statistically-expected lifespan hasn't been wasted.