differences between Modular Separation and Modular Extensions HMVC?

[eluser]ajsie[/eluser]
[quote author="n0xie" date="1271166404"]Maybe you should start learning about CI in general before getting ahead of yourself. You post a lot of (basic) questions and that is fine, but learn to walk before you run. Besides that, the documentation is pretty clear on the subject. They both enable modular design. HMVC also allows you to cross load modules.[/quote]

ok sorry, im just too eager. but im sure learning each day. and noticed that i should search before i post since a lot of users have posted the same questions.