How this site uses its XML sitemap

Summary

The sitemap lists every address the crawl is expected to account for, including the planted ones. Each entry is an absolute address on this host only, written exactly as the server answers it, with a trailing slash for folder pages. The crawler compares what the sitemap promises with what each address actually returns.

Detail

A sitemap entry that redirects or returns 404 is a quality problem worth reporting, so one of each is planted here and documented in the crawl test guide.