Add the separate accounts page

doc/source/commands.rst

@@ -7,9 +7,7 @@ you can use the **"** character to surround this argument.
 
 The commands described in this page are shown like this:
 
-.. code-block::
-
-    /command <mandatory argument> [optional argument]
+``/command <mandatory argument> [optional argument]``
 
 You can get the same help as below from inside poezio with the **/help** command.
 

doc/source/dev/index.rst

@@ -16,4 +16,5 @@ Contents:
    timed_events
    common
    sleek
+   theming
 

doc/source/misc/index.rst

-Miscellaneous topics
-====================
+Other topics
+============
 
 Contents:
 
 .. toctree::
     :maxdepth: 2
 
+    separate
     correct
     ssl
 
-
-..
-    configure
-    ssl
-    usage
-    themes
-    keys
-    plugins
-    misc
-    xep
-    dev
-

doc/source/misc/separate.rst

+Using several accounts
+======================
+
+Poezio does not support multi-accounts, and we do not plan to do so in a
+foreseeable future. However, you can run several poezio instances (e.g. with
+tmux or screen) to have similar functionnality.
+
+You can specify a different configuration file than the default with:
+
+.. code-block:: bash
+
+    ./launch.sh -f separate_config.cfg
+
+
+The relevant options for a separate config are the following:
+
+* :term:`plugins_dir`: A different directory for the plugin sources (not _that_ useful)
+* :term:`log_dir`: A different directory for logs
+* :term:`plugins_conf_dir`: A different directory for plugin configurations ; useful for the GPG plugin, for example.
+
+Those options are detailed in the *configuration page*.