The main thesis of this paper is that intricate nature of software systems and computer education systems can, and in our opinion should, be represented by graph models. Graphs are used in computer science and computer education almost everywhere, since graph is a very natural way of explain mg complex situations on an intuitive level. In the paper, methods and systems for visual processing of graphs and graph models are presented. Our series of books intended to be a general guide on graph algorithms is outlined. A dictionary on graph theory and its electronic version are described.
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