Fine-grained and Structure-Oriented Document Integration Tools are Needed for Development Processes Stefan Gruner, Manfred Nagel, Andy Schürr Development processes of various engineering disciplines are usually rather complex. They consist of many interacting subprocesses which are carried out by different developers. Each subprocess delivers its own documents which are part of the overal result. All involved documents and their mutual, fine-grained dependencies are subject to permanent changes during their life-time in the development process. Keeping those documents in a consistent state is one of the most important prerequisites for the success of any engineering project. As completely automatic change control between document configurations is often impossible, interactive tools are necessary which we call integration tools. We report about experiences in building such tools and present an object-oriented and graph-grammar-based method for formal specification. It is also sketched how the tools' implementations can be derived from those high-level specifications.