First of all, this article is an example of one whose first 80% could be cut. So many writers on the Web take so long to get to the point. I wish that they had learned the Inverted Pyramid style, which has been a tradition of newspapers.

Second, is what the writer describing something that would be met with a hyperlinked table of contents, like http://www.postgresql.org/docs/9.5/interactive/index.html, along with maybe each page hyperlinking to other pages where fit?