The sitemap checkbox adds a pointer to your existing sitemap inside llms.txt.
Turn it on when you want a reader of llms.txt to know where the full URL list lives. Turn it off if this file should only list the sections you checked.
The checkbox
- On: the file can mention the sitemap URL
- Off: the file omits that pointer
- Either way, sitemap.xml itself is not edited
- The choice is stored for that task
The checkbox is on the same step as the store summary and the custom prompt.