howto: add table of contents

diff --git a/howto.mdwn b/howto.mdwn
index 877f5069830ae73ae8739ead52c6312259330e86..8706f5d4e837b506cca3948627776b8fb45913d3 100644 (file)
--- a/howto.mdwn
+++ b/howto.mdwn
@@ -4,6 +4,8 @@
 Some tips about how to do some useful things with notmuch, and the
 various "third party" notmuch utilities.
 
+[[!toc levels=2]]
+
 ## <span id="receive_mail">**Receive mail**</span>
 
 Notmuch requires either [maildir