--- a/doc/introduction.rst	Fri Mar 30 08:48:25 2018 +0200
+++ b/doc/introduction.rst	Wed Apr 04 09:45:29 2018 +0200
@@ -8,6 +8,7 @@
 The configurations can be read from different types of files:
 
 - :ref:`YAML files <yaml-files>`
+- :ref:`JSON files <json-files>`  
 - :ref:`INI files <ini-files>`
 - :ref:`executable Python scripts <executable-python-scripts>`
 
@@ -28,6 +29,14 @@
    :language: yaml
 
 
+.. _json-files:
+
+JSON files
+----------
+
+.. todo:: Document basic JSON usage
+
+
 .. _ini-files:
 
 INI Files
@@ -138,6 +147,9 @@
   ``.yml`` or ``.yaml``
     for YAML configuration files
 
+  ``.json``
+    for JSON configuration files
+
   ``.ini``
     for INI configuration files