The program starts by selecting two random numbers, which will be used throughout the program for choosing text and geometries. These are chosen from a library of geometries, constituted by "connectors" and "objects" generated by pre-designed algorithms. The algorithms are mathematical functions that use recursion or parametric equations together with elementary solid geometries. They have a certain amount of randomness in its formulas to produce variety with the same library element. The "connectors" are elemets that build the city structure. They are large-scale structures that establish a certain order for the city, and which in turn contain "objects", smaller scale structures.

This is a sample of some of the elements from the library: