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 # 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~[https://hepsoftwarefoundation.org/activities/licensing.html] and CERN~[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],[http://legal.web.cern.ch/licensing/software], and follow the examples of other big scientific software projects. The license adopted by the CORSIKA project will be the explicit coyleft licencse GPLv3, as copyied in full in the file LICENSE. For legal reasons and the ability to maintin the CORSIKA project efficiently 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. Of course all contributors will be co-lists as software authors of the CORSIKA project, and listed indefinitely in the AUTHORS file. The active contributors of the CORSIKA project will 
+## 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. 
 
-## Definition of a contributor
+## Definition of coyright holder
+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 file. 
 
 ## Definition of a scientific author
+The scientific authors and contributors of the CORSIKA project are people, where the Collaboration decides.   
+
+## Collaboration committee
 
 ## Accepting new contributors, and authors