No explanation of "content type" in section 5.2

In the User Guide we mention, "The Basic page content type must exist. This is created on your site when you install with the core Standard installation profile" but there's no mention or explanation of "content types" in section 5 beforehand. I think adding a sentence that explains that content types are the list of items displayed in the "create content" are all "content types" would be helpful.

The only other spot I've seen content types mentioned in the user guide was in section 2.3, there's a quick example from the market site, but no explanation is given around them until section 6.1 where the user is guided through creating one.