Talk to the computer about the ancient trade route. The program is able not only to react to user input, but also generate its own behavior. It simultaneously provides several processes: 1. outputs natural language text; 2. outputs illustrations to this text; 3. processes user input such as questions and orders. The communication is by means of human-like sentences. The user may ask questions before or during the dialogue. The language processor makes it possible to implement the active table of contents. It consists of meaningful sentences so that you can read it as usual, but they also are workable commands. Click GO at any and the program will run appropriate actions.