The next step is to be able to drill down to individual buildings. Again I used GIMP to create a large square, first divided into a 5x5 matrix of smaller squares. The large square at this scale represents on of the squares on the Pavis map, which I'll refer to as a neighborhood. The 25 squares inside are 100x100 meter 'blocks".
The final layer is another large square, subdivided into a 10x10 matrix. The large square represents the 'block' in the neighborhood map and is subdivided into 10m2 'lots'. Or about 30x30 feet - not coincidentally the size of the house I owned in the Chicago suburbs fifteen years ago.
Next I'll demonstrate drilling down to the building and block level.