Anticipating Microsoft Corp’s Windows 3.0 announcement today, Asymetrix Inc, New York yesterday unveiled ToolBook 1.0, a software construction set for Windows 3.0: it says that with object-oriented ToolBook, users can quickly build custom graphical applications without using traditional programming languages, offering colour drawing tools, its own OpenScript programming language, hypernavigation capabilities, animation features, text formatting and flat-file database capabilities; it sells for $400.