A wonderfully obsessive, perhaps dotty, book which explores that fascinating territory when the two dimensional is raised by a dimension. I first took the book to be a celebration of manhole covers, as if from Sol Le Witt. Then the logic and magic of it struck me. The pages measure 17 x 25 cms. I have added a few pages of the explanatory text to help your understanding.The whole book can be seen as a pre-digital piece of software to generate Form, ad infinitum.