The definition of a glyph covers a large number of techniques which map data values to various geometric and color attributes of graphical primitives or symbols. Histograms are perhaps the most widely recognized form of glyph, where data values control the height of rectangular bars. One might even consider a scatterplot a specialized form of glyph representation, where data values control the positional attributes of a symbol. In XmdvTool, we use the star glyph pattern, which creates for each data point N rays emanating at equal angles from a point on the screen. Currently glyphs are spaced uniformly across the screen, though we might want to use 2 of the dimensions to control position. The length of each ray is determined by the data value for that dimension. A polyline is then generated to encompass the rays, forming a blob shape. The glyph brush tool may be used as a key to the dimensions.