With the growing importance of model-driven development, the ability of transforming models into well-defined semantic domains becomes a key to automated code generation or verification in the software development process. In this paper, we describe a high-level concept for specifying model transformations by means of typed, attributed graph transformation at the level of formal visual language specifications for the source and the target language. At the implementation level, a graph-transformation based generator of visual editor Eclipse plug-ins from formal visual language specifications has been developed. On the basis of this generator we discuss concepts for an implementation of the presented model transformation concepts and for an integration with the generated Eclipse plug-ins. We explain the concepts for model transformation and their implementation along a concrete model transformation from activity diagrams to Petri nets. Key words: model transformation, Eclipse, editor pl...