Sitemap Generator Forum

Just started with Sitemap Generator today and wondered why four different site maps are generated and what can they be used for? I presume *.xml is the standard one to send to Google etc and *.html can be used for visitors to my site, but not sure about the others.
Chris
Ps Thanks for your great service.

Text sitemap was used by Yahoo earlier, before they announced supporting of xml sitemap protocol.
More details on ror sitemaps: [ External links are visible to logged in users only ]

Btw, here is a general "about sitemaps" article: https://www.xml-sitemaps.com/about-sitemaps.html

Thanks for your help.
Chris