diff --git a/examples/component/checkbox.cpp b/examples/component/checkbox.cpp
index 7b3fba4..c63de28 100644
--- a/examples/component/checkbox.cpp
+++ b/examples/component/checkbox.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/component/checkbox.hpp"
 
 #include "ftxui/component/component.hpp"
diff --git a/examples/component/checkbox_in_frame.cpp b/examples/component/checkbox_in_frame.cpp
index b0eb5e9..aa66be7 100644
--- a/examples/component/checkbox_in_frame.cpp
+++ b/examples/component/checkbox_in_frame.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/component/checkbox.hpp"
 #include "ftxui/component/container.hpp"
 #include "ftxui/component/input.hpp"
diff --git a/examples/component/gallery.cpp b/examples/component/gallery.cpp
index dc6bf55..360938c 100644
--- a/examples/component/gallery.cpp
+++ b/examples/component/gallery.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/component/checkbox.hpp"
 #include "ftxui/component/container.hpp"
 #include "ftxui/component/input.hpp"
diff --git a/examples/component/homescreen.cpp b/examples/component/homescreen.cpp
index 10abfd1..b92856e 100644
--- a/examples/component/homescreen.cpp
+++ b/examples/component/homescreen.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include <cmath>
 #include <thread>
 
diff --git a/examples/component/input.cpp b/examples/component/input.cpp
index cfe5aa7..269fc1b 100644
--- a/examples/component/input.cpp
+++ b/examples/component/input.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/component/input.hpp"
 
 #include <iostream>
diff --git a/examples/component/menu.cpp b/examples/component/menu.cpp
index 43afd46..db8b96f 100644
--- a/examples/component/menu.cpp
+++ b/examples/component/menu.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/component/menu.hpp"
 
 #include <chrono>
diff --git a/examples/component/menu2.cpp b/examples/component/menu2.cpp
index d078855..daf3203 100644
--- a/examples/component/menu2.cpp
+++ b/examples/component/menu2.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include <chrono>
 #include <iostream>
 #include <thread>
diff --git a/examples/component/menu_style.cpp b/examples/component/menu_style.cpp
index ae3e4ae..433c234 100644
--- a/examples/component/menu_style.cpp
+++ b/examples/component/menu_style.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include <iostream>
 #include <thread>
 
diff --git a/examples/component/radiobox.cpp b/examples/component/radiobox.cpp
index 8a9dd7e..46e106d 100644
--- a/examples/component/radiobox.cpp
+++ b/examples/component/radiobox.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/component/radiobox.hpp"
 
 #include "ftxui/component/component.hpp"
diff --git a/examples/component/radiobox_in_frame.cpp b/examples/component/radiobox_in_frame.cpp
index 7bcb206..ae40ac3 100644
--- a/examples/component/radiobox_in_frame.cpp
+++ b/examples/component/radiobox_in_frame.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/component/checkbox.hpp"
 #include "ftxui/component/container.hpp"
 #include "ftxui/component/input.hpp"
diff --git a/examples/component/tab_horizontal.cpp b/examples/component/tab_horizontal.cpp
index d827505..77e689f 100644
--- a/examples/component/tab_horizontal.cpp
+++ b/examples/component/tab_horizontal.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include <iostream>
 #include <thread>
 
diff --git a/examples/component/tab_vertical.cpp b/examples/component/tab_vertical.cpp
index 3fc4804..c8ad689 100644
--- a/examples/component/tab_vertical.cpp
+++ b/examples/component/tab_vertical.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include <iostream>
 
 #include "ftxui/component/container.hpp"
diff --git a/examples/component/toggle.cpp b/examples/component/toggle.cpp
index 6dc185a..3844a59 100644
--- a/examples/component/toggle.cpp
+++ b/examples/component/toggle.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/component/toggle.hpp"
 
 #include <chrono>
diff --git a/examples/dom/border.cpp b/examples/dom/border.cpp
index 0211d64..837f219 100644
--- a/examples/dom/border.cpp
+++ b/examples/dom/border.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include <chrono>
 #include <iostream>
 #include <thread>
diff --git a/examples/dom/dbox.cpp b/examples/dom/dbox.cpp
index 698af03..742c58a 100644
--- a/examples/dom/dbox.cpp
+++ b/examples/dom/dbox.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include <iostream>
 
 #include "ftxui/dom/elements.hpp"
diff --git a/examples/dom/gauge.cpp b/examples/dom/gauge.cpp
index 098137a..71684e6 100644
--- a/examples/dom/gauge.cpp
+++ b/examples/dom/gauge.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include <chrono>
 #include <iostream>
 #include <thread>
diff --git a/examples/dom/graph.cpp b/examples/dom/graph.cpp
index e6d43c8..d59f9f6 100644
--- a/examples/dom/graph.cpp
+++ b/examples/dom/graph.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include <chrono>
 #include <cmath>
 #include <iostream>
diff --git a/examples/dom/hflow.cpp b/examples/dom/hflow.cpp
index 99f2b41..cc2fd07 100644
--- a/examples/dom/hflow.cpp
+++ b/examples/dom/hflow.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include <iostream>
 
 #include "ftxui/dom/elements.hpp"
diff --git a/examples/dom/html_like.cpp b/examples/dom/html_like.cpp
index 318fde5..8b52a57 100644
--- a/examples/dom/html_like.cpp
+++ b/examples/dom/html_like.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include <chrono>
 #include <iostream>
 #include <thread>
diff --git a/examples/dom/package_manager.cpp b/examples/dom/package_manager.cpp
index e3b99b4..fb6719f 100644
--- a/examples/dom/package_manager.cpp
+++ b/examples/dom/package_manager.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include <chrono>
 #include <iostream>
 #include <list>
diff --git a/examples/dom/paragraph.cpp b/examples/dom/paragraph.cpp
index 614e689..8b2da83 100644
--- a/examples/dom/paragraph.cpp
+++ b/examples/dom/paragraph.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include <iostream>
 
 #include "ftxui/dom/elements.hpp"
diff --git a/examples/dom/separator.cpp b/examples/dom/separator.cpp
index 8e69fa9..16f10f4 100644
--- a/examples/dom/separator.cpp
+++ b/examples/dom/separator.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include <iostream>
 
 #include "ftxui/dom/elements.hpp"
diff --git a/examples/dom/size.cpp b/examples/dom/size.cpp
index ec3cfe0..3cb9da6 100644
--- a/examples/dom/size.cpp
+++ b/examples/dom/size.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include <iostream>
 
 #include "ftxui/dom/elements.hpp"
diff --git a/examples/dom/spinner.cpp b/examples/dom/spinner.cpp
index cf26e70..70c73db 100644
--- a/examples/dom/spinner.cpp
+++ b/examples/dom/spinner.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include <chrono>
 #include <iostream>
 #include <thread>
diff --git a/examples/dom/style_blink.cpp b/examples/dom/style_blink.cpp
index a170d77..5db769a 100644
--- a/examples/dom/style_blink.cpp
+++ b/examples/dom/style_blink.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include <iostream>
 
 #include "ftxui/dom/elements.hpp"
diff --git a/examples/dom/style_bold.cpp b/examples/dom/style_bold.cpp
index faf13b1..bc33097 100644
--- a/examples/dom/style_bold.cpp
+++ b/examples/dom/style_bold.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include <iostream>
 
 #include "ftxui/dom/elements.hpp"
diff --git a/examples/dom/style_color.cpp b/examples/dom/style_color.cpp
index 8d87eaf..06151bd 100644
--- a/examples/dom/style_color.cpp
+++ b/examples/dom/style_color.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include <iostream>
 
 #include "ftxui/dom/elements.hpp"
diff --git a/examples/dom/style_dim.cpp b/examples/dom/style_dim.cpp
index eeee5af..38e88a0 100644
--- a/examples/dom/style_dim.cpp
+++ b/examples/dom/style_dim.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include <iostream>
 
 #include "ftxui/dom/elements.hpp"
diff --git a/examples/dom/style_gallery.cpp b/examples/dom/style_gallery.cpp
index 4715baa..c67a7fe 100644
--- a/examples/dom/style_gallery.cpp
+++ b/examples/dom/style_gallery.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include <iostream>
 
 #include "ftxui/dom/elements.hpp"
diff --git a/examples/dom/style_inverted.cpp b/examples/dom/style_inverted.cpp
index 0fc599d..1395100 100644
--- a/examples/dom/style_inverted.cpp
+++ b/examples/dom/style_inverted.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include <iostream>
 
 #include "ftxui/dom/elements.hpp"
diff --git a/examples/dom/style_underlined.cpp b/examples/dom/style_underlined.cpp
index 9175c5c..0f01841 100644
--- a/examples/dom/style_underlined.cpp
+++ b/examples/dom/style_underlined.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include <iostream>
 
 #include "ftxui/dom/elements.hpp"
diff --git a/examples/dom/vbox_hbox.cpp b/examples/dom/vbox_hbox.cpp
index 0d55812..45adfc5 100644
--- a/examples/dom/vbox_hbox.cpp
+++ b/examples/dom/vbox_hbox.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include <iostream>
 
 #include "ftxui/dom/elements.hpp"
diff --git a/examples/util/print_key_press.cpp b/examples/util/print_key_press.cpp
index dc8c968..86442ef 100644
--- a/examples/util/print_key_press.cpp
+++ b/examples/util/print_key_press.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include <chrono>
 #include <iostream>
 #include <thread>
diff --git a/include/ftxui/component/checkbox.hpp b/include/ftxui/component/checkbox.hpp
index 7428e53..1dcffea 100644
--- a/include/ftxui/component/checkbox.hpp
+++ b/include/ftxui/component/checkbox.hpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #ifndef FTXUI_COMPONENT_CHECKBOX_HPP
 #define FTXUI_COMPONENT_CHECKBOX_HPP
 
diff --git a/include/ftxui/component/component.hpp b/include/ftxui/component/component.hpp
index c68ca66..bd739f6 100644
--- a/include/ftxui/component/component.hpp
+++ b/include/ftxui/component/component.hpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #ifndef FTXUI_COMPONENT_COMPONENT_HPP
 #define FTXUI_COMPONENT_COMPONENT_HPP
 
diff --git a/include/ftxui/component/container.hpp b/include/ftxui/component/container.hpp
index 51395ed..70fde16 100644
--- a/include/ftxui/component/container.hpp
+++ b/include/ftxui/component/container.hpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #ifndef FTXUI_COMPONENT_CONTAINER_HPP
 #define FTXUI_COMPONENT_CONTAINER_HPP
 
diff --git a/include/ftxui/component/event.hpp b/include/ftxui/component/event.hpp
index d02e9e0..f24082e 100644
--- a/include/ftxui/component/event.hpp
+++ b/include/ftxui/component/event.hpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #ifndef FTXUI_COMPONENT_EVENT_HPP
 #define FTXUI_COMPONENT_EVENT_HPP
 
diff --git a/include/ftxui/component/input.hpp b/include/ftxui/component/input.hpp
index f0c3245..712696f 100644
--- a/include/ftxui/component/input.hpp
+++ b/include/ftxui/component/input.hpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #ifndef FTXUI_COMPONENT_INPUT_H_
 #define FTXUI_COMPONENT_INPUT_H_
 
diff --git a/include/ftxui/component/menu.hpp b/include/ftxui/component/menu.hpp
index ca38ffd..91a709b 100644
--- a/include/ftxui/component/menu.hpp
+++ b/include/ftxui/component/menu.hpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #ifndef FTXUI_COMPONENT_MENU
 #define FTXUI_COMPONENT_MENU
 
diff --git a/include/ftxui/component/radiobox.hpp b/include/ftxui/component/radiobox.hpp
index 1f15a7e..a938b1b 100644
--- a/include/ftxui/component/radiobox.hpp
+++ b/include/ftxui/component/radiobox.hpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #ifndef FTXUI_COMPONENT_RADIOBOX_HPP
 #define FTXUI_COMPONENT_RADIOBOX_HPP
 
diff --git a/include/ftxui/component/receiver.hpp b/include/ftxui/component/receiver.hpp
index e0ba5bb..e1a1c2c 100644
--- a/include/ftxui/component/receiver.hpp
+++ b/include/ftxui/component/receiver.hpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #ifndef FTXUI_COMPONENT_RECEIVER_HPP_
 #define FTXUI_COMPONENT_RECEIVER_HPP_
 
diff --git a/include/ftxui/component/screen_interactive.hpp b/include/ftxui/component/screen_interactive.hpp
index 3e0426b..7b9b75b 100644
--- a/include/ftxui/component/screen_interactive.hpp
+++ b/include/ftxui/component/screen_interactive.hpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #ifndef FTXUI_COMPONENT_SCREEN_INTERACTIVE_HPP
 #define FTXUI_COMPONENT_SCREEN_INTERACTIVE_HPP
 
diff --git a/include/ftxui/component/toggle.hpp b/include/ftxui/component/toggle.hpp
index e93e4b3..9747d6c 100644
--- a/include/ftxui/component/toggle.hpp
+++ b/include/ftxui/component/toggle.hpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #ifndef FTXUI_COMPONENT_TOGGLE_H_
 #define FTXUI_COMPONENT_TOGGLE_H_
 
diff --git a/include/ftxui/dom/elements.hpp b/include/ftxui/dom/elements.hpp
index 6a6828d..82d534c 100644
--- a/include/ftxui/dom/elements.hpp
+++ b/include/ftxui/dom/elements.hpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #ifndef FTXUI_DOM_ELEMENTS_HPP
 #define FTXUI_DOM_ELEMENTS_HPP
 
diff --git a/include/ftxui/dom/node.hpp b/include/ftxui/dom/node.hpp
index f54e6de..2b8e34d 100644
--- a/include/ftxui/dom/node.hpp
+++ b/include/ftxui/dom/node.hpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #ifndef FTXUI_DOM_NODE_HPP
 #define FTXUI_DOM_NODE_HPP
 
diff --git a/include/ftxui/dom/requirement.hpp b/include/ftxui/dom/requirement.hpp
index f2f7412..701959c 100644
--- a/include/ftxui/dom/requirement.hpp
+++ b/include/ftxui/dom/requirement.hpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #ifndef FTXUI_DOM_REQUIREMENT_HPP
 #define FTXUI_DOM_REQUIREMENT_HPP
 
diff --git a/include/ftxui/dom/take_any_args.hpp b/include/ftxui/dom/take_any_args.hpp
index e5db345..8de009b 100644
--- a/include/ftxui/dom/take_any_args.hpp
+++ b/include/ftxui/dom/take_any_args.hpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include <type_traits>
 
 template <class T>
diff --git a/include/ftxui/screen/box.hpp b/include/ftxui/screen/box.hpp
index e020b64..aaa9f45 100644
--- a/include/ftxui/screen/box.hpp
+++ b/include/ftxui/screen/box.hpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #ifndef FTXUI_SCREEN_BOX_HPP
 #define FTXUI_SCREEN_BOX_HPP
 
diff --git a/include/ftxui/screen/color.hpp b/include/ftxui/screen/color.hpp
index b895fa8..d518bb0 100644
--- a/include/ftxui/screen/color.hpp
+++ b/include/ftxui/screen/color.hpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #ifndef FTXUI_SCREEN_COLOR
 #define FTXUI_SCREEN_COLOR
 
diff --git a/include/ftxui/screen/screen.hpp b/include/ftxui/screen/screen.hpp
index b53956c..a5cacef 100644
--- a/include/ftxui/screen/screen.hpp
+++ b/include/ftxui/screen/screen.hpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #ifndef FTXUI_SCREEN_SCREEN
 #define FTXUI_SCREEN_SCREEN
 
diff --git a/include/ftxui/screen/string.hpp b/include/ftxui/screen/string.hpp
index 1a1785a..b904f41 100644
--- a/include/ftxui/screen/string.hpp
+++ b/include/ftxui/screen/string.hpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #ifndef FTXUI_SCREEN_STRING_HPP
 #define FTXUI_SCREEN_STRING_HPP
 
diff --git a/include/ftxui/util/autoreset.hpp b/include/ftxui/util/autoreset.hpp
index c371f03..aa09c00 100644
--- a/include/ftxui/util/autoreset.hpp
+++ b/include/ftxui/util/autoreset.hpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #ifndef FTXUI_UTIL_AUTORESET_HPP
 #define FTXUI_UTIL_AUTORESET_HPP
 
diff --git a/other/format.sh b/other/format.sh
new file mode 100755
index 0000000..e8b3140
--- /dev/null
+++ b/other/format.sh
@@ -0,0 +1,19 @@
+#!/bin/bash
+cd "$(dirname "$0")"
+cd ..
+
+# Add the license file.
+files=$(find ./src ./include ./examples  -name "*.hpp" -o -name "*.cpp")
+for file in $files
+do
+  if ! grep -q Copyright $file
+  then
+    cat ./other/license_headers.cpp $file >$file.new && mv $file.new $file
+  fi
+done
+
+# Use clang-format.
+for file in $files
+do
+  clang-format -i $file
+done
diff --git a/other/license_headers.cpp b/other/license_headers.cpp
new file mode 100644
index 0000000..81c0407
--- /dev/null
+++ b/other/license_headers.cpp
@@ -0,0 +1,4 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
diff --git a/src/ftxui/component/checkbox.cpp b/src/ftxui/component/checkbox.cpp
index 6e88987..86e5dfb 100644
--- a/src/ftxui/component/checkbox.cpp
+++ b/src/ftxui/component/checkbox.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/component/checkbox.hpp"
 
 #include <functional>
diff --git a/src/ftxui/component/component.cpp b/src/ftxui/component/component.cpp
index e194138..fa07cc1 100644
--- a/src/ftxui/component/component.cpp
+++ b/src/ftxui/component/component.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/component/component.hpp"
 
 #include <assert.h>
diff --git a/src/ftxui/component/container.cpp b/src/ftxui/component/container.cpp
index b4b26c5..1fdb47e 100644
--- a/src/ftxui/component/container.cpp
+++ b/src/ftxui/component/container.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/component/container.hpp"
 
 #include <algorithm>
diff --git a/src/ftxui/component/container_test.cpp b/src/ftxui/component/container_test.cpp
index bcab985..a8c6e6b 100644
--- a/src/ftxui/component/container_test.cpp
+++ b/src/ftxui/component/container_test.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/component/container.hpp"
 
 #include "gtest/gtest.h"
diff --git a/src/ftxui/component/event.cpp b/src/ftxui/component/event.cpp
index a4c08df..f595846 100644
--- a/src/ftxui/component/event.cpp
+++ b/src/ftxui/component/event.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/component/event.hpp"
 
 #include <iostream>
diff --git a/src/ftxui/component/input.cpp b/src/ftxui/component/input.cpp
index ac3baa4..f5d6f63 100644
--- a/src/ftxui/component/input.cpp
+++ b/src/ftxui/component/input.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/component/input.hpp"
 
 #include <algorithm>
diff --git a/src/ftxui/component/menu.cpp b/src/ftxui/component/menu.cpp
index e949552..321edbb 100644
--- a/src/ftxui/component/menu.cpp
+++ b/src/ftxui/component/menu.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/component/menu.hpp"
 
 #include <algorithm>
diff --git a/src/ftxui/component/radiobox.cpp b/src/ftxui/component/radiobox.cpp
index d098210..6e89d95 100644
--- a/src/ftxui/component/radiobox.cpp
+++ b/src/ftxui/component/radiobox.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/component/radiobox.hpp"
 
 #include <algorithm>
diff --git a/src/ftxui/component/radiobox_test.cpp b/src/ftxui/component/radiobox_test.cpp
index 593cacd..22a7566 100644
--- a/src/ftxui/component/radiobox_test.cpp
+++ b/src/ftxui/component/radiobox_test.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/component/radiobox.hpp"
 
 #include "gtest/gtest.h"
diff --git a/src/ftxui/component/receiver_test.cpp b/src/ftxui/component/receiver_test.cpp
index 5305631..7cdd513 100644
--- a/src/ftxui/component/receiver_test.cpp
+++ b/src/ftxui/component/receiver_test.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/component/receiver.hpp"
 
 #include <thread>
diff --git a/src/ftxui/component/screen_interactive.cpp b/src/ftxui/component/screen_interactive.cpp
index ff29ccf..3eef226 100644
--- a/src/ftxui/component/screen_interactive.cpp
+++ b/src/ftxui/component/screen_interactive.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/component/screen_interactive.hpp"
 
 #include <stdio.h>
diff --git a/src/ftxui/component/toggle.cpp b/src/ftxui/component/toggle.cpp
index 8586f70..8403777 100644
--- a/src/ftxui/component/toggle.cpp
+++ b/src/ftxui/component/toggle.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/component/toggle.hpp"
 
 #include <algorithm>
diff --git a/src/ftxui/component/toggle_test.cpp b/src/ftxui/component/toggle_test.cpp
index c806c9d..c9692d1 100644
--- a/src/ftxui/component/toggle_test.cpp
+++ b/src/ftxui/component/toggle_test.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/component/toggle.hpp"
 
 #include "gtest/gtest.h"
diff --git a/src/ftxui/dom/blink.cpp b/src/ftxui/dom/blink.cpp
index 89b4e0e..4fa58e6 100644
--- a/src/ftxui/dom/blink.cpp
+++ b/src/ftxui/dom/blink.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/dom/elements.hpp"
 #include "ftxui/dom/node_decorator.hpp"
 
diff --git a/src/ftxui/dom/bold.cpp b/src/ftxui/dom/bold.cpp
index 175b901..ae40c4e 100644
--- a/src/ftxui/dom/bold.cpp
+++ b/src/ftxui/dom/bold.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/dom/elements.hpp"
 #include "ftxui/dom/node_decorator.hpp"
 
diff --git a/src/ftxui/dom/border.cpp b/src/ftxui/dom/border.cpp
index 7ef1b6e..2ce2630 100644
--- a/src/ftxui/dom/border.cpp
+++ b/src/ftxui/dom/border.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include <algorithm>
 
 #include "ftxui/dom/elements.hpp"
diff --git a/src/ftxui/dom/color.cpp b/src/ftxui/dom/color.cpp
index 1b45c19..dc2ced2 100644
--- a/src/ftxui/dom/color.cpp
+++ b/src/ftxui/dom/color.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/dom/elements.hpp"
 #include "ftxui/dom/node_decorator.hpp"
 
diff --git a/src/ftxui/dom/composite_decorator.cpp b/src/ftxui/dom/composite_decorator.cpp
index c4214ef..5479fce 100644
--- a/src/ftxui/dom/composite_decorator.cpp
+++ b/src/ftxui/dom/composite_decorator.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/dom/elements.hpp"
 #include "ftxui/dom/node.hpp"
 
diff --git a/src/ftxui/dom/dbox.cpp b/src/ftxui/dom/dbox.cpp
index 50b6641..abd7847 100644
--- a/src/ftxui/dom/dbox.cpp
+++ b/src/ftxui/dom/dbox.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include <algorithm>
 
 #include "ftxui/dom/elements.hpp"
diff --git a/src/ftxui/dom/dim.cpp b/src/ftxui/dom/dim.cpp
index 1845e1e..ce1c51b 100644
--- a/src/ftxui/dom/dim.cpp
+++ b/src/ftxui/dom/dim.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/dom/elements.hpp"
 #include "ftxui/dom/node_decorator.hpp"
 
diff --git a/src/ftxui/dom/flex.cpp b/src/ftxui/dom/flex.cpp
index a12496b..b6bd879 100644
--- a/src/ftxui/dom/flex.cpp
+++ b/src/ftxui/dom/flex.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/dom/elements.hpp"
 #include "ftxui/dom/node.hpp"
 
diff --git a/src/ftxui/dom/frame.cpp b/src/ftxui/dom/frame.cpp
index c215775..5ea53ab 100644
--- a/src/ftxui/dom/frame.cpp
+++ b/src/ftxui/dom/frame.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include <algorithm>
 
 #include "ftxui/dom/elements.hpp"
diff --git a/src/ftxui/dom/gauge.cpp b/src/ftxui/dom/gauge.cpp
index 588cbe0..494c227 100644
--- a/src/ftxui/dom/gauge.cpp
+++ b/src/ftxui/dom/gauge.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/dom/elements.hpp"
 #include "ftxui/dom/node.hpp"
 
diff --git a/src/ftxui/dom/gauge_test.cpp b/src/ftxui/dom/gauge_test.cpp
index 328b057..0e702a7 100644
--- a/src/ftxui/dom/gauge_test.cpp
+++ b/src/ftxui/dom/gauge_test.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/dom/elements.hpp"
 #include "ftxui/screen/screen.hpp"
 #include "gtest/gtest.h"
diff --git a/src/ftxui/dom/graph.cpp b/src/ftxui/dom/graph.cpp
index 520dd38..e466ac8 100644
--- a/src/ftxui/dom/graph.cpp
+++ b/src/ftxui/dom/graph.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/dom/elements.hpp"
 
 namespace ftxui {
diff --git a/src/ftxui/dom/hbox.cpp b/src/ftxui/dom/hbox.cpp
index efc0a3f..8bd5f6a 100644
--- a/src/ftxui/dom/hbox.cpp
+++ b/src/ftxui/dom/hbox.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include <algorithm>
 
 #include "ftxui/dom/elements.hpp"
diff --git a/src/ftxui/dom/hbox_test.cpp b/src/ftxui/dom/hbox_test.cpp
index bca1c19..7c7ac16 100644
--- a/src/ftxui/dom/hbox_test.cpp
+++ b/src/ftxui/dom/hbox_test.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/dom/elements.hpp"
 #include "ftxui/screen/screen.hpp"
 #include "gtest/gtest.h"
diff --git a/src/ftxui/dom/hflow.cpp b/src/ftxui/dom/hflow.cpp
index 3aacf62..7bb068c 100644
--- a/src/ftxui/dom/hflow.cpp
+++ b/src/ftxui/dom/hflow.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include <algorithm>
 
 #include "ftxui/dom/elements.hpp"
diff --git a/src/ftxui/dom/inverted.cpp b/src/ftxui/dom/inverted.cpp
index c0a34f8..f3149d5 100644
--- a/src/ftxui/dom/inverted.cpp
+++ b/src/ftxui/dom/inverted.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/dom/elements.hpp"
 #include "ftxui/dom/node_decorator.hpp"
 
diff --git a/src/ftxui/dom/node.cpp b/src/ftxui/dom/node.cpp
index a5cb1a4..c9da864 100644
--- a/src/ftxui/dom/node.cpp
+++ b/src/ftxui/dom/node.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/dom/node.hpp"
 
 namespace ftxui {
diff --git a/src/ftxui/dom/node_decorator.cpp b/src/ftxui/dom/node_decorator.cpp
index f690e57..f62c918 100644
--- a/src/ftxui/dom/node_decorator.cpp
+++ b/src/ftxui/dom/node_decorator.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/dom/node_decorator.hpp"
 
 namespace ftxui {
diff --git a/src/ftxui/dom/node_decorator.hpp b/src/ftxui/dom/node_decorator.hpp
index 1b7dae7..83679ac 100644
--- a/src/ftxui/dom/node_decorator.hpp
+++ b/src/ftxui/dom/node_decorator.hpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #ifndef FTXUI_DOM_NODE_DECORATOR_H_
 #define FTXUI_DOM_NODE_DECORATOR_H_
 
diff --git a/src/ftxui/dom/paragraph.cpp b/src/ftxui/dom/paragraph.cpp
index 220705d..2c5d9cf 100644
--- a/src/ftxui/dom/paragraph.cpp
+++ b/src/ftxui/dom/paragraph.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include <sstream>
 
 #include "ftxui/dom/elements.hpp"
diff --git a/src/ftxui/dom/separator.cpp b/src/ftxui/dom/separator.cpp
index 0c86327..5c9f48b 100644
--- a/src/ftxui/dom/separator.cpp
+++ b/src/ftxui/dom/separator.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/dom/node.hpp"
 
 namespace ftxui {
diff --git a/src/ftxui/dom/size.cpp b/src/ftxui/dom/size.cpp
index d5a167a..b0af312 100644
--- a/src/ftxui/dom/size.cpp
+++ b/src/ftxui/dom/size.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include <algorithm>
 
 #include "ftxui/dom/elements.hpp"
diff --git a/src/ftxui/dom/spinner.cpp b/src/ftxui/dom/spinner.cpp
index e4f0c3c..d90577e 100644
--- a/src/ftxui/dom/spinner.cpp
+++ b/src/ftxui/dom/spinner.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/dom/elements.hpp"
 #include "ftxui/dom/node.hpp"
 
diff --git a/src/ftxui/dom/text.cpp b/src/ftxui/dom/text.cpp
index e58a1e1..7b797d1 100644
--- a/src/ftxui/dom/text.cpp
+++ b/src/ftxui/dom/text.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/dom/node.hpp"
 #include "ftxui/screen/string.hpp"
 
diff --git a/src/ftxui/dom/text_test.cpp b/src/ftxui/dom/text_test.cpp
index c1d99f6..f8616e2 100644
--- a/src/ftxui/dom/text_test.cpp
+++ b/src/ftxui/dom/text_test.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/dom/elements.hpp"
 #include "ftxui/screen/screen.hpp"
 #include "gtest/gtest.h"
diff --git a/src/ftxui/dom/underlined.cpp b/src/ftxui/dom/underlined.cpp
index 9870cfc..edded6a 100644
--- a/src/ftxui/dom/underlined.cpp
+++ b/src/ftxui/dom/underlined.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/dom/elements.hpp"
 #include "ftxui/dom/node_decorator.hpp"
 
diff --git a/src/ftxui/dom/util.cpp b/src/ftxui/dom/util.cpp
index febb4cf..d5f4672 100644
--- a/src/ftxui/dom/util.cpp
+++ b/src/ftxui/dom/util.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/dom/elements.hpp"
 
 namespace ftxui {
diff --git a/src/ftxui/dom/vbox.cpp b/src/ftxui/dom/vbox.cpp
index 25e0697..b355171 100644
--- a/src/ftxui/dom/vbox.cpp
+++ b/src/ftxui/dom/vbox.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include <algorithm>
 #include <iostream>
 
diff --git a/src/ftxui/dom/vbox_test.cpp b/src/ftxui/dom/vbox_test.cpp
index 3da7784..1245806 100644
--- a/src/ftxui/dom/vbox_test.cpp
+++ b/src/ftxui/dom/vbox_test.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/dom/elements.hpp"
 #include "ftxui/screen/screen.hpp"
 #include "gtest/gtest.h"
diff --git a/src/ftxui/screen/box.cpp b/src/ftxui/screen/box.cpp
index baf0f46..05f5a29 100644
--- a/src/ftxui/screen/box.cpp
+++ b/src/ftxui/screen/box.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/screen/box.hpp"
 
 #include <algorithm>
diff --git a/src/ftxui/screen/screen.cpp b/src/ftxui/screen/screen.cpp
index 42e46c0..1745022 100644
--- a/src/ftxui/screen/screen.cpp
+++ b/src/ftxui/screen/screen.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/screen/screen.hpp"
 
 #include <algorithm>
diff --git a/src/ftxui/screen/string.cpp b/src/ftxui/screen/string.cpp
index 46a029e..8cf4c91 100644
--- a/src/ftxui/screen/string.cpp
+++ b/src/ftxui/screen/string.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/screen/string.hpp"
 
 #include <codecvt>
diff --git a/src/ftxui/screen/terminal.cpp b/src/ftxui/screen/terminal.cpp
index 0598667..2c5f07f 100644
--- a/src/ftxui/screen/terminal.cpp
+++ b/src/ftxui/screen/terminal.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #include "ftxui/screen/terminal.hpp"
 
 #include <stdio.h>
diff --git a/src/ftxui/screen/terminal.hpp b/src/ftxui/screen/terminal.hpp
index 2310bac..8e29596 100644
--- a/src/ftxui/screen/terminal.hpp
+++ b/src/ftxui/screen/terminal.hpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 #ifndef FTXUI_CORE_TERMINAL_HPP
 #define FTXUI_CORE_TERMINAL_HPP
 
diff --git a/src/ftxui/screen/wcwidth.cpp b/src/ftxui/screen/wcwidth.cpp
index b47edb1..0e69959 100644
--- a/src/ftxui/screen/wcwidth.cpp
+++ b/src/ftxui/screen/wcwidth.cpp
@@ -1,3 +1,7 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+
 /*
  * This is an implementation of wcwidth() and wcswidth() (defined in
  * IEEE Std 1002.1-2001) for Unicode.