+CONFIGURATION
+=============
+
+Indexing is influenced by the configuration options
+:ref:`index.decrypt <index.decrypt>` and :ref:`index.header
+<index.header>`. Tagging
+is controlled by :ref:`new.tags <new.tags>` and
+:ref:`maildir.synchronize_flags <maildir.synchronize_flags>`. See
+:any:`notmuch-config(1)` for details.
+