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+From: David Bremner <david@tethera.net>\r
+To: David Bremner <david@tethera.net>, notmuch@notmuchmail.org\r
+Subject: [PATCH] doc: document notmuch-dump header line\r
+Date: Sun, 5 Jun 2016 19:23:58 -0300\r
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+\r
+This was introduced with the libconfig changes, but not documented then.\r
+---\r
+\r
+after some IRC discussion with Tomi, this rst is slightly less gross\r
+\r
+ doc/man1/notmuch-dump.rst | 10 +++++++++-\r
+ 1 file changed, 9 insertions(+), 1 deletion(-)\r
+\r
+diff --git a/doc/man1/notmuch-dump.rst b/doc/man1/notmuch-dump.rst\r
+index eda9e07..94986a8 100644\r
+--- a/doc/man1/notmuch-dump.rst\r
++++ b/doc/man1/notmuch-dump.rst\r
+@@ -86,7 +86,15 @@ Supported options for **dump** include\r
+ Output per-message metadata, namely tags. See *format* above\r
+ for description of the output.\r
+ \r
+- The default is to include both tags and configuration information\r
++ The default is to include both tags and configuration\r
++ information. As of version 2 of the dump format, there is a\r
++ header line of the following form\r
++\r
++ |\r
++ | #notmuch-dump <*format*>:<*version*> <*included*>\r
++\r
++ where <*included*> is a comma separated list of the above\r
++ options.\r
+ \r
+ ``--output=``\ <filename>\r
+ Write output to given file instead of stdout.\r
+-- \r
+2.8.1\r
+\r