-/$LISTNAME/t/$MESSAGE_ID/ -> HTML content of thread
-/$LISTNAME/t/$MESSAGE_ID/atom -> Atom feed for thread
-/$LISTNAME/t/$MESSAGE_ID/mbox.gz -> gzipped mbox of thread
+/$INBOX/$MESSAGE_ID/t/ -> HTML content of thread (nested)
+/$INBOX/$MESSAGE_ID/T/ -> HTML content of thread (flat)
+ anchors:
+ #u location of $MESSAGE_ID in URL
+ #m<SHA-1> per-message links, where <SHA-1> is of the Message-ID
+ of each message (stable)
+ #s<NUM> relative numeric position of message in thread (unstable)
+ #i<...> diffstat location for patch emails
+ #Z?<...> per-file diff header location for patch emails
+
+/$INBOX/$MESSAGE_ID/t.atom -> Atom feed for thread
+/$INBOX/$MESSAGE_ID/t.mbox.gz -> gzipped mbox of thread