An SDL pattern is a reusable software artifact representing a generic solution for a recurring design problem. It is required that SDL be the applied design language. Thereby we benefit from the formal basis provided by SDL. Instead of specifying and applying the patterns rather informally, a formal target language such as SDL offers the possibility of precisely specifying how to apply a specific pattern, under which assumptions this will be allowed, and what properties result for the embedding context. In the paper we discuss aspects of tool support for SDL-pattern application. In particular, we describe requirements, design decisions, and some implementation issues of a prototype SDL-pattern editor that is currently under development. The SDL-pattern editor mainly supports syntactical application and documentation of SDL patterns.
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