Towards the end of the product documentation life-cycle, a documentation set can be archived, while still be available publicly. The documentation set for a legacy or deprecated product is typically archived when the documentation is no longer updated. The set of pages is then only available as:
One PDF file, and optionally as a downloadable HTML zip.
HTML pages still served on this site but that are no longer indexed (except for the documentation set home page). Hence, content in these documentation sets is only accessible by navigating the left side table of contents and via hyperlinks in the pages.