Iview Wizard

In PCD->Iview Wizard-> there are lot of iviews available here ., ex) trasaction Iview, BSP iview, webdynpro iview etc .,,

Can anyone tell me wht's the difference between these iviews .

I hope if we want to use a BSP application, we have to choose BSP Iview option . Is it ?

Valuable pts will be awarded .

Rgds

J