It becomes customisable because of the type of binding I used. I was not happy use plastic instead of metal, but i had this publication to allow a almost 360 degrees rotation so that all the content in the rows could reconnect to the other rows. I was also not happy with being obliged to buy something specific to achieve my intent. I normally try to find the easiest and most accessible options. To solve both problems, I am happy with what I chose: it lets you, the user, to take possession of this object and participate in its use and creation. This type of spine can be reused for making new notebooks, e.g. it can be cut in smaller pieces to experiment with small notebooks. You can get rid of all the pages I provided, and fill it in with yours. You can mix mines with yours. In addition, the pages can become cards and be used without the spine. Would they still be a book then?</p>