E S true if execute "S" succeeds
f S messages originating from user S
F forwarded messages
- h S messages which contain header S
+ h S messages which contain S in any header name or value
+ H S messages which contain S in the value of any header
i S messages which contain S in Message-Id header
I S messages which contain S in inreplyto header
k # messages which are marked with color #
GTK 2 Version
-------------
+2014-10-20 3.11.0
+2014-06-09 3.10.1
2014-05-26 3.10.0
2013-12-14 3.9.3
2013-06-08 3.9.2