Fix minor formatting errors

users/autostart.rst

@@ -229,9 +229,9 @@ log messages (``-e`` lets the pager jump to the very end)::
 
     journalctl -e -u syncthing@myuser.service
     journalctl -e --user-unit=syncthing.service
-    
+
 Permissions
-^^^^^^^^^
+^^^^^^^^^^^
 
 In case you want to override the permissions under which the files and folders are created (especially because Windows does not have a concept of group permissions), you enable the `Ignore Permissions` option in the folder settings, and add the line "UMask=0002" (or any other umask you like) in the [Service] section of the "syncthing@.service" file.
 

users/relaying.rst

@@ -0,0 +1,31 @@
+.. _relaying:
+
+Relaying
+========
+
+Syncthing can bounce traffic via a *relay* when it's not possible to establish
+a direct connection between two devices. There are a number of public relays
+available for this purpose. The advantage is that it makes a connection
+possible where it would otherwise not be; the downside is that the transfer
+rate is much lower than a direct connection would allow. When connected via a
+relay, Syncthing will periodically retry a direct connection.
+
+Relaying is enabled by default.
+
+Security
+--------
+
+The connection between two devices is still end to end encrypted, the relay
+only retransmits the encrypted data much like a router. However, a device must
+register with a relay in order to be reachable over that relay, so the relay
+knows your IP and device ID. In that respect it is similar to a discovery
+server. The relay operator can see the amount of traffic flowing between
+devices.
+
+Configuration
+-------------
+
+Running Your Own Relay
+----------------------
+
+.. versionadded:: 0.12.0