What are the Saved Views: Civil Plan, Civil Profile, Civil Cross Section?

What are the Saved Views Types: Civil Plan, Civil Profile, Civil Cross Section?  

Apparently they are flags used by the software.  For what?  What tools look for the flag for what reason?

I assume some tools automatically create saved views of a particular type for some purpose?  Which tools? What purpose?

If I were to create a Saved View, I now have these new options.  Which should I pick?  What if I select "General" instead of Civil Plan?  What did I just prevent myself from doing?  

Thanks.