WHM is WebHost Manager.
WHM allows you to but is not limited to administering individual accounts, reseller accounts & performing basic system and control panel maintenance via a secure interface.
http://www.cpanel.net/features-whm.htmlwow, I'm in Search Engine mode today.
I have another tip for you!
check
http://www.google.com/These guys have all the info of a lot of common things
enjoy