diff --git a/README.md b/README.md
index 307f20e..5e3314f 100644
--- a/README.md
+++ b/README.md
@@ -3,41 +3,18 @@ Ege
 
 `Ege` (Ewol Game Engine) is a FREE software.
 
-Copyright (c)
-=============
+License (APACHE v2.0)
+=====================
+Copyright ege Edouard DUPIN
 
-2011, Edouard DUPIN
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
 
-License (DSB v3)
-=============
-
-Note : only for etk and EWOL
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions
-are met:
-
-  1. Redistributions of source code must retain the above copyright
-     notice, this list of conditions and the following disclaimer.
-
-  2. Redistributions in binary form must reproduce the above copyright
-     notice, this list of conditions and the following disclaimer in
-     the documentation and/or other materials provided with the
-     distribution.
-
-  3. The name of the author may not be used to endorse or promote
-     products derived from this software without specific prior
-     written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
-IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
-INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
-STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
-IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-POSSIBILITY OF SUCH DAMAGE.
+    http://www.apache.org/licenses/LICENSE-2.0
 
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
\ No newline at end of file
diff --git a/ege/Environement.cpp b/ege/Environement.cpp
index 828c1b6..3e55170 100644
--- a/ege/Environement.cpp
+++ b/ege/Environement.cpp
@@ -275,3 +275,13 @@ ege::Environement::Environement() :
   m_particuleEngine(*this) {
 	// nothing to do ...
 }
+
+void ege::Environement::clear() {
+	for (auto &it : m_listElementGame) {
+		if (it != nullptr) {
+			delete it;
+			it = nullptr;
+		}
+	}
+	m_listElementGame.clear();
+}
diff --git a/ege/Environement.h b/ege/Environement.h
index 314554b..125a79b 100644
--- a/ege/Environement.h
+++ b/ege/Environement.h
@@ -42,11 +42,15 @@ namespace ege {
 		protected:
 			int32_t m_type;
 		public:
-			int32_t getType() { return m_type; };
+			int32_t getType() {
+				return m_type;
+			};
 		protected:
 			int32_t m_groupSource;
 		public:
-			int32_t getSourceGroup() { return m_groupSource; };
+			int32_t getSourceGroup() {
+				return m_groupSource;
+			};
 		protected:
 			std::vector<int32_t> m_groupDestination;
 		public:
@@ -80,6 +84,10 @@ namespace ege {
 			Environement();
 			virtual ~Environement() { };
 		public:
+			/**
+			 * @brief Remove all from the current environement
+			 */
+			void clear();
 			/**
 			 * @brief add a creator element system
 			 * @param[in] _type Type of the element.
diff --git a/license.txt b/license.txt
index 6b0c1ca..32b9e58 100644
--- a/license.txt
+++ b/license.txt
@@ -1,34 +1,13 @@
-Copyright (c) 2013, Edouard DUPIN
-All rights reserved.
+Copyright ege Edouard DUPIN
 
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions
-are met:
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
 
-    * Redistributions of source code must retain the above copyright
-      notice, this list of conditions and the following disclaimer.
-    
-    * Redistributions in binary form must reproduce the above
-      copyright notice, this list of conditions and the following
-      disclaimer in the documentation and/or other materials provided
-      with the distribution.
-    
-    * Neither the name of the EGE nor the names of its contributors
-      may be used to endorse or promote products derived from this
-      software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
-FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
-COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
-INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
-BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
-ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-POSSIBILITY OF SUCH DAMAGE.
-
-see : http://opensource.org/licenses/BSD-3-Clause
+    http://www.apache.org/licenses/LICENSE-2.0
 
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
\ No newline at end of file