diff --git a/doc/source/impression/canon_wrapper.rst b/doc/source/impression/canon_wrapper.rst
new file mode 100644
index 00000000..3e0e12f8
--- /dev/null
+++ b/doc/source/impression/canon_wrapper.rst
@@ -0,0 +1,5 @@
+canon_wrapper
+=============
+
+.. automodule:: impression.canon_wrapper
+   :members:
diff --git a/doc/source/impression/index.rst b/doc/source/impression/index.rst
new file mode 100644
index 00000000..97ff1b2f
--- /dev/null
+++ b/doc/source/impression/index.rst
@@ -0,0 +1,11 @@
+Impression
+===========
+
+Table des matières :
+
+.. toctree::
+   :maxdepth: 2
+   :glob:
+
+   *
+   
diff --git a/doc/source/index.rst b/doc/source/index.rst
index 3cdb424e..3a66723d 100644
--- a/doc/source/index.rst
+++ b/doc/source/index.rst
@@ -12,6 +12,7 @@ Table des matières :
    :maxdepth: 5
    
    gestion/index
+   impression/index
 
 Indices and tables
 ==================
diff --git a/impression/canon_wrapper.py b/impression/canon_wrapper.py
index dfcdccd7..c4cb30ca 100755
--- a/impression/canon_wrapper.py
+++ b/impression/canon_wrapper.py
@@ -1,9 +1,13 @@
 #!/usr/bin/python
 # -*- encoding: utf-8 -*-
-# canon_wrapper.py
-# Authors: Daniel STAN <dstan@crans.org>
-#          Antoine Durand-Gasselin <adg@crans.org>
-# License: GPLv3
+#canon_wrapper.py
+"""
+.. codeauthor:: Daniel STAN <dstan@crans.org>
+.. codeauthor:: Antoine Durand-Gasselin <adg@crans.org>
+
+
+License: GPLv3
+"""
 
 import requests #pip install requests
 # See:
@@ -106,6 +110,7 @@ def build_url(name):
 
 
 def range_checker(a, b):
+    """Type function for a given range"""
     def cast(x):
         try:
             v = int(x)
@@ -117,6 +122,7 @@ def range_checker(a, b):
     return cast
 
 def build_parser():
+    """Make argparse object"""
     parser = argparse.ArgumentParser(
         description="HTTP printing driver for irc3580, with compatibility mode.",
         epilog="logs are sent to syslog (eg /var/log/canon_wrapper.log)",
@@ -159,6 +165,7 @@ def build_parser():
     return parser
 
 def do_print(args):
+    """Effectively compatibilize then print the file"""
     opt=build_options(args)
     syslog('Options: %s' % repr(opt))
     #syslog('Starting ghostscript compat, piped mode')
@@ -205,3 +212,8 @@ if __name__ == '__main__':
             syslog('Caught exception %s' % repr(e))
             raise
 
+else:
+    parser = build_parser()
+    __doc__ += 'Help message::\n' +\
+        '\n'.join('    ' + l for l in parser.format_help().split('\n')) 
+