CFX-Block or Assembly?
 

I created a mesh in ICEM CFD, then output to CFX. In the General setting->Basic Setting->Location: there are two opition, one is block, the other is assembly. I am wondering what they are meaning and how I can choose. Whether tHe assembly includes all of the elements(surfaces, mesh, body....) except block,or what are in the block?

Thanks a lot!

Susan