notmuch::review is a review
notmuch::reviewed has been (well) reviewed
notmuch::test provides a new test/or improves testing
+ notmuch::wip is "work in progress", posted for review or comment.
+## Tracking the patch queue
+
+ I use the following search (in my case as saved search in emacs).
+
+ tag:notmuch::patch and not tag:notmuch::pushed and
+ not tag:notmuch::obsolete and not tag:notmuch::wip
+
## Design notes
### Disk format.