In part 1 the penrose tiling generator stored its results in a data table. The graph in part 1 contained lines of different gray levels, indicating how many times each line was drawn. The tiles are not emitted from the generator as polygons, just a bunch of loose and repeated edges. Part 2 JSL won't be using the data table; instead an associative array will collect the line segments using their X-Y coordinates as a key. The data for each key will be a list of all the other endpoints associated with the X-Y location. After the associative array is built, the JSL will work through it to extract unique polygons (the kites and the darts) and identify the kites and darts for the orange and blue coloring.