Update COLLABORATION_AGREEMENT.md

COLLABORATION_AGREEMENT.md

 # Collaboration agreement
-The aim of the CORSIKA project is to creat a scientific, and collaborative software framework as a fundamental tool for research. The collaborative agreement and licinsing scheme are based on the guidelines layed out by HSF~[[1]](https://hepsoftwarefoundation.org/activities/licensing.html) and CERN~[[2,](https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=2ahUKEwiLqKG00dXdAhUOZFAKHdIwAh4QFjAAegQIARAC&url=https%3A%2F%2Findico.cern.ch%2Fcategory%2F4251%2Fattachments%2F101%2F505%2FOSL-2012-01-Open_Source_Licences_at_CERN-Short_version.pdf&usg=AOvVaw1n4S0PQCSeE6wbdfdhKDqF),[,3]](http://legal.web.cern.ch/licensing/software), and follow the examples of other big scientific software projects. 
+The aim of the CORSIKA project is to creat a scientific, and collaborative software framework as a fundamental tool for research. The collaborative agreement and licinsing scheme are based on the guidelines layed out by HSF [[1]](https://hepsoftwarefoundation.org/activities/licensing.html) and CERN [[2,](https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=2ahUKEwiLqKG00dXdAhUOZFAKHdIwAh4QFjAAegQIARAC&url=https%3A%2F%2Findico.cern.ch%2Fcategory%2F4251%2Fattachments%2F101%2F505%2FOSL-2012-01-Open_Source_Licences_at_CERN-Short_version.pdf&usg=AOvVaw1n4S0PQCSeE6wbdfdhKDqF), [,3]](http://legal.web.cern.ch/licensing/software), and follow the examples of other big scientific software projects. 
 
 ## The software license of the CORSIKA project
 The license adopted by the CORSIKA project will be the explicit coyleft licencse GPLv3, as copyied in full in the file [LICENSE](LICENSE). 
@@ -8,18 +8,22 @@ The license adopted by the CORSIKA project will be the explicit coyleft licencse
 For legal reasons and the ability to maintin the CORSIKA project effectively over a very long lifespan of several decades, all contibuters are required to yield their copyright to the CORSIKA project, and it decision making stucture, as defined in this document. 
 
 ## Definition of a contributor, and software author
-All contributors will be co-listed as software authors of the CORSIKA project, and listed indefinitely in the [AUTHORS](AUTHORS) file. 
+All contributors will be co-listed as software authors of the CORSIKA project, and listed indefinitely in the [AUTHORS](AUTHORS) file. Contributors should add their name and contact data to the AUTHORS file. 
 
 ## Definition of a scientific author
-The scientific authors and contributors of the CORSIKA project are people, where the Collaboration decides.   
+The scientific authors of the CORSIKA project must be named in any scientific context, for example in talks, proceedings, posters, journal paper or any other publication or outreach document. Scientific authors or contributors are listed in [SCIENTIFIC_AUTHORS](SCIENTIFIC_AUTHORS). Individuals are only listed as scientific authors if the Collaboration decides, and any such decision can be revisited at any time. A scientific contribution can be agreed to be linked to any activity, which can also have an end date assigned. Thus, the list of scientific authors change with time, and reflects the group of individuals that actually contributed in a specific state of the CORSIKA project. For specific scientific publications, the list of scientific authors can also be extended beyond SCIENTIFIC_AUTHORS for any reasons, when the Collaboration decides so. 
 
 ## Collaboration committee
 
+
 ## Accepting new contributors, and authors
 
+
 ## Changing to a different license, for parts or the complete project
 
+
 ## Deciding and planning releases
+The Collaboration board decides on any change to the Collaboration agreement, any design decision, as well as all software releases. 
 
 ## Prime distributor, and copyright holder