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An inherent problem in current approaches to system development is that developers cannot build necessary software until they understand what is required, while end-users generally do not have the skills necessary to build what they need. To facilitate the development process, Hitachi is proposing a new system development concept, End-User Customizable Application Program (EUCAP), and has developed a component-based visual programming environment for building EUCAPs.
This programming environment provides two interfaces: a visual programming interface for end-users, and a textual programming interface for developers. Developers build components to extend the visual programming interface, while end-users visually assemble these components to build EUCAPs. The environment supports Microsoft's OLE (Object Linking and Embedding) standard, resulting in an open environment in which off-the-shelf applications and componentware can be imported and used as built-in components.