This document formalises the procedure for creation of the design principles (FDPs) and add a template for an FDP. In the rendered form it can be read at [FDP-0](https://spinham.github.io/spinham-format/fdp/fdp-0.html) and [FDP-template](https://spinham.github.io/spinham-format/fdp/fdp-template.html). The source code is available in the repository.