Visual language features supporting human-human and human-computer communication

Fundamental to the design of visual languages are the goals of facilitating communication between people and computers, and between people and other people. The Object Block Programming Environment (OBPE) is a visual design, programming, and simulation tool which emphasizes support for both human-human and human-computer communication. OBPE provides several features to support effective communication: (1) multiple, coordinated views and aspects, (2) customizable graphics, (3) the "machines with push-buttons" metaphor and (4) the host-transient pattern. OBPE uses a diagram-based, visual object-oriented language that is intended for quickly designing and programming visual simulations of factories.