+``notmuch-tree-mode`` displays the results of a "notmuch tree" of your
+email archives. Each line in the buffer represents a single
+message giving the relative date, the author, subject, and any
+tags.
+
+``<return>``
+ Displays that message.
+
+``N``
+ Move to next message
+
+``P``
+ Move to previous message
+
+``n``
+ Move to next matching message
+
+``p``
+ Move to previous matching message
+
+``?``
+ Display full set of key bindings
+
+Global key bindings
+===================
+
+Several features are accessible from anywhere in notmuch through the
+following key bindings:
+
+``j``
+ Jump to saved searches using :ref:`notmuch-jump`.
+
+``k``
+ Tagging operations using :ref:`notmuch-tag-jump`
+
+.. _notmuch-jump:
+
+notmuch-jump
+------------
+
+Saved searches configured through :ref:`saved-searches` can
+include a "shortcut key" that's accessible through notmuch-jump.
+Pressing ``j`` anywhere in notmuch followed by the configured shortcut
+key of a saved search will immediately jump to that saved search. For
+example, in the default configuration ``j i`` jumps immediately to the
+inbox search. When you press ``j``, notmuch-jump shows the saved
+searches and their shortcut keys in the mini-buffer.
+
+.. _notmuch-tag-jump:
+
+notmuch-tag-jump
+----------------
+
+Tagging operations configured through ``notmuch-tagging-keys`` can
+be accessed via :kbd:`k` in :ref:`notmuch-show`,
+:ref:`notmuch-search` and :ref:`notmuch-tree`. With a
+prefix (:kbd:`C-u k`), notmuch displays a menu of the reverses of the
+operations specified in ``notmuch-tagging-keys``; i.e. each
+``+tag`` is replaced by ``-tag`` and vice versa.
+
+:index:`notmuch-tagging-keys`
+
+ A list of keys and corresponding tagging operations.
+