NOMAD-software-and-source-code-release.md

@@ -75,6 +75,29 @@ Licenses outside that list should be used only with a very good reason.
 Please comment your projects source release issue if you have to
 diverge from the Apache 2.0 license.
 
+You SHOULD claim your copyright.
+
+All source code files should have the following header (python example)
+as the very first thing in them
+
+```
+ # Copyright 2016-2018 [A comma separated list of full author names without the brackets]
+ #
+ # 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
+ #
+ #     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.
+```
+
+You can adapt this for the comment format of other source code languages.
+
 ### clean up you code
 
 You SHOULD clean up your code and make it something you are proud to show.