Using 1.2rc3 maildir format maildir /mail/example.com/j/johndoe/{cur,new,tmp}

Is there more documentation and examples on how to configure virtual mailboxes, or maybe more info on what it is suppose to do? From what I could understand on the wiki, i could create a fake/virtual folder under /mail/example.com/j/johndoe/virtual/allmail/ and inside that dir create dovecot-virtual with

INBOX all

And then in my mail client i would see virtual/allmail and when i click that folder it shows me mail from all my normal maildir folders? Is my thinking of how to use virtual mailboxes totally off, or am I trying to use it for what it is suppose to be used for?

So far i have been messing with various values = yes/no using the following

namespace private { prefix = virtual/ separator = / # location = virtual:~/virtual location = virtual:~/virtual:LAYOUT=maildir++ list = yes inbox = no subscriptions = yes hidden = no }

# The default namespace that is visible to IMAP clients namespace private { prefix = separator = / location = maildir:~/ list = yes inbox = yes subscriptions = yes hidden = no }

I dont know if I am retarded in my lack of ability to figure this out or what