The Sitemap directive in a robots.txt file is a single line, Sitemap: https://zeo.org/sitemap.xml, that tells crawlers exactly where to find a site's XML sitemap without needing to guess a common path or wait for it to be submitted manually through Search Console.
It's one of the few robots.txt directives that isn't about restricting access; it's purely informational, pointing crawlers toward a resource rather than blocking or permitting one. A robots.txt file can list more than one Sitemap line, useful for large sites that shard their sitemap across several files or maintain separate sitemaps per content type or locale. Including it costs nothing and adds a small but real convenience for crawlers, since robots.txt is one of the first files most well-behaved bots check on any given site, making it a reliable, always-checked place to surface the sitemap's location alongside whatever's already been submitted directly through Search Console.
