NEAT (iNtegrated Environment for Authoring in ToolBook) provides templates and various facilities for the rapid prototyping of computer-based presentations, a capability that is lacking in current authoring systems. NEAT is a specialized authoring system that can be used by authors who have a limited knowledge of computer systems and no programming experience; these authors can communicate with other members of the authoring team using annotations, hypertext links and highlighting. Basic principles of the NEAT design include: maintenance of the book structure, automatic creation of computerized drills using templates for different question types, support for reusability through storage capabilities, a clear display of the final product, user-friendliness, and the ability to inspect scripts and properties of neatware objects. Computer-based presentation developed with NEAT is called neatware. Neatware is a specific type of courseware, based on a book metaphor. Features of neatware include multiple views of the same material, an electronic index, footprints showing student progress, margin and "global" notes, electronic bookmarks, a storage list of previously used pages, hypertext links for non-linear reading, electronic text highlighting, examples, and examples. The user can develop neatware by creating an outline of chapters, sections and pages; various operations can be performed through the Control Panel. The implementation of NEAT is based on a tree data structure in a single text field. (Contains eight references.) (AEF)