Why 4 different site maps?

[chris Grady]

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.

[XML-Sitemaps Support]

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

[chris Grady]

Thanks for your help.
Chris