An untitled URL (i.e., just a filename) is not easily found in my browser history and searches tend to find web pages, which is what most people read and link to.<p>I just did a quick search to find a NASA webpage with a link to this document, and it didn&#x27;t appear among the top results AFAICT. I didn&#x27;t spend much time on it, but that&#x27;s part of my point: It&#x27;s not easy to find.