sci-physics Fukui Renderer DAWN (Drawer for Academic WritiNgs) is a renderer, which reads 3D geometrical data and visualize them. It is a vectorized 3D PostScript processor with analytical hidden line/surface removal. It aims at precise technical drawing of complicated objects. It performs geometrical hidden line/surface removal and calculates out all visible parts of the 3D data before drawing. This drawing algorithm realizes device-independent technical high quality of vectorized graphics. 3D Data files should be generated by a modeler or by hands separately. If you use DAWN as a visualizer of, say, a simulator of physical experiments, the simulator application itself is recognized as a modeler. An important feature of DAWN is that it has been developed to visualize 3D data generated by a high-energy experimental detector simulator "GEANT4".