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Two possible approaches to reuse with design patterns (DPs) are described: pattern-based design and pattern-related code composition. For pattern-based design, a new representation of DPs similar to class diagrams as well as different modes for creating an instance of DP are proposed. Design patterns (DPs) [2] capture and communicate approved design solutions. DPs identify participants, their roles and collaborations, and the distribution of responsibilities. A DP explains the rationale behind the solution. It describes when a DP is to be applied, and the consequences and trade-offs of its application. Without doubt, the key point in collecting DPs into catalogues is their reuse. Therefore we give a software reuse perspective on DPs. Particularly, we present a compositional view on reuse with DPs where DPs correspond to reusable components available and applicable during software development. DPs may be used as building blocks when a software system is developed. But current reuse with DPs differs from standard reuse practices-it proceeds manually and basically relies on reuser's own knowledge and experience. In this paper, we first give an overall view on reuse with DPs. An appropriate representation of DP solution is recognized as an important part of successful DP reuse. We thus propose a new way of DPs representation that complements current way of DP presentation in catalogues. A new model represents DP solution at its general and abstract level and allows to derive visible and manageable DP instances. Software reuse with DPs becomes more controlled and less error prone. For the reuse purposes, it is important to strictly distinguish between the terms DP and DP instance. In the reuse context, DP solution should be emphasised as well. A DP refers to the whole description as it occurs in a catalogue. A DP involves several sections describing the problem being solved, its context and solution. DP contains textual descriptions combined with diagrams or sample code. An emphasis is put on explaining the essence and applicability of DP. A DP instance is a product of DP reuse. It refers to those parts of software system that result from DP application. A DP instance is a part of the design/-implementation of a software system but not located in one place. Rather, it is scattered over several places and intertwined with other, to the DP non-relevant parts of design/code. Besides, there is no explicit information about the presence of DP instance in the software system so DP …