diff --git a/README.md b/README.md
index 0c5aa5f..4cc460a 100644
--- a/README.md
+++ b/README.md
@@ -10,4 +10,4 @@ Remote Desktop Protocol in Twisted Python
 * python-qt4
 * python-qt4reactor
 
-this project is still in progress. 
+this project is still in progress.
diff --git a/rdpy/display/qt.py b/rdpy/display/qt.py
index 216688d..0e90fb5 100644
--- a/rdpy/display/qt.py
+++ b/rdpy/display/qt.py
@@ -1,6 +1,28 @@
-'''
-@author: sylvain
-'''
+#
+# Copyright (c) 2014 Sylvain Peyrefitte
+#
+# This file is part of rdpy.
+#
+# rdpy is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+
+"""
+Qt specific code
+
+QRemoteDesktop is a widget use for render in rdpy
+"""
+
 from PyQt4 import QtGui, QtCore
 from rdpy.protocol.rfb.rfb import RFBClientObserver
 from rdpy.protocol.rdp.rdp import RDPClientObserver
diff --git a/rdpy/display/rle.py b/rdpy/display/rle.py
index 992be6d..40cdeaa 100644
--- a/rdpy/display/rle.py
+++ b/rdpy/display/rle.py
@@ -1,8 +1,31 @@
-'''
-@author: citronneur
-@file: implement run length encoding algorithm use in RDP protocol to compress bit
+#
+# Copyright (c) 2014 Sylvain Peyrefitte
+#
+# This file is part of rdpy.
+#
+# rdpy is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+
+"""
+Run length Encoding Algorithm implementation
+
+It's the microsoft view of RLE algorithm
+
+Most of bitmap in RDP protocol use this encoding
+
 @see: http://msdn.microsoft.com/en-us/library/dd240593.aspx
-'''
+"""
 from rdpy.network.type import UInt8
 
 def extractCodeId(data):
diff --git a/rdpy/examples/rdpclient.py b/rdpy/examples/rdpclient.py
index 38d85de..d4a2a95 100644
--- a/rdpy/examples/rdpclient.py
+++ b/rdpy/examples/rdpclient.py
@@ -1,8 +1,29 @@
-'''
-@author: citronneur
-'''
+#
+# Copyright (c) 2014 Sylvain Peyrefitte
+#
+# This file is part of rdpy.
+#
+# rdpy is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+
+"""
+example of use rdpy as rdp client
+"""
+
 import sys
 import os
+
 # Change path so we find rdpy
 sys.path.insert(1, os.path.join(sys.path[0], '../..'))
 
diff --git a/rdpy/examples/vncclient.py b/rdpy/examples/vncclient.py
index 3d53023..737a9dc 100644
--- a/rdpy/examples/vncclient.py
+++ b/rdpy/examples/vncclient.py
@@ -1,8 +1,29 @@
-'''
-@author: citronneur
-'''
+#
+# Copyright (c) 2014 Sylvain Peyrefitte
+#
+# This file is part of rdpy.
+#
+# rdpy is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+
+"""
+example of use rdpy as vnc client
+"""
+
 import sys
 import os
+
 # Change path so we find rdpy
 sys.path.insert(1, os.path.join(sys.path[0], '../..'))
 
diff --git a/rdpy/network/const.py b/rdpy/network/const.py
index fbd3dd8..fa66ae2 100644
--- a/rdpy/network/const.py
+++ b/rdpy/network/const.py
@@ -1,6 +1,25 @@
-'''
-@author: sylvain
-'''
+#
+# Copyright (c) 2014 Sylvain Peyrefitte
+#
+# This file is part of rdpy.
+#
+# rdpy is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+
+"""
+Const it's use to create fake object enum in python
+"""
 
 from copy import deepcopy
 
diff --git a/rdpy/network/error.py b/rdpy/network/error.py
index 7f5240f..d55ce34 100644
--- a/rdpy/network/error.py
+++ b/rdpy/network/error.py
@@ -1,6 +1,25 @@
-'''
-@author: sylvain
-'''
+#
+# Copyright (c) 2014 Sylvain Peyrefitte
+#
+# This file is part of rdpy.
+#
+# rdpy is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+
+"""
+All exceptions error use in RDPY
+"""
 
 class InvalidValue(Exception):
     '''
diff --git a/rdpy/network/layer.py b/rdpy/network/layer.py
index a20a3ab..5c2d514 100644
--- a/rdpy/network/layer.py
+++ b/rdpy/network/layer.py
@@ -1,6 +1,27 @@
-'''
-@author: sylvain
-'''
+#
+# Copyright (c) 2014 Sylvain Peyrefitte
+#
+# This file is part of rdpy.
+#
+# rdpy is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+
+"""
+Join RDPY design with twisted design
+
+RDPY use Layer Protocol design (like twisted)
+"""
 
 class LayerMode(object):
     NONE = 0
diff --git a/rdpy/network/type.py b/rdpy/network/type.py
index 6ed0e79..9f1dc4d 100644
--- a/rdpy/network/type.py
+++ b/rdpy/network/type.py
@@ -1,6 +1,28 @@
-'''
-@author: sylvain
-'''
+#
+# Copyright (c) 2014 Sylvain Peyrefitte
+#
+# This file is part of rdpy.
+#
+# rdpy is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+
+"""
+All type use RDPY
+
+It's a basic implementation that seems to protobuf but dynamically
+We are in python we can use that!
+"""
 
 import struct
 from copy import deepcopy