--- a/pgtool	Tue May 06 18:37:43 2014 +0200
+++ b/pgtool	Wed May 07 18:33:50 2014 +0200
@@ -3,7 +3,8 @@
 """
 Wrapper script for pgtoolkit tools.
 
-Usage:
+Usage
+-----
 
     pgtool --list
         List all available tools.
@@ -17,6 +18,24 @@
     pgtool schemadiff --help
         Get help for tool parameters.
 
+Configuration
+-------------
+
+Global pgtoolkit configuration:
+    /etc/pgtoolkit.conf
+
+Local configuration:
+    ./pgtoolkit.conf
+
+Additional config file can be loaded using -c parameter (after tool name).
+
+Configuration from all present files is loaded in above order,
+later value overrides previous value. Resulting config file priority is:
+
+   1) parameter
+   2) local
+   3) global
+
 """
 
 import pgtoolkit.tools