[notmuch] Catching up unread messages

[Tassilo Horn]

Hi!

I got notmuch running, and it's absolutely incredible.  It's so damn
fast and the results are very good.  So thanks a lot for creating this
nice piece of software. :-)

Ok, so new the question: I indexed all my 63.000 mails, and because it
was a first-time indexing, all my mail now has the tags inbox and
unread.  Of course, I don't want to SPC through all threads (using the
great emacs interface) to remove the unread status.  So is there some
catchup command, which marks all messages in the buffer as read?

BTW, what's the intention of the inbox tag?  When I've read a thread,
both inbox as well as unread disappear, so I don't get the difference
between them.

Bye,
Tassilo