The general rule we follow is that we would like access to any changes that Founding Members make to ODA source files. This will generally include bug fixes, and minor enhancements/modifications. As an example, enhancements might include changes made to port the code to a new platform. Any related code that you write, that is outside of our source files, is yours. We have members who have implemented their own modules for certain parts of our system, for example, they have their own custom geometry library or rendering device that they use in place of our standard modules. We make no claim to these types of components.