All these requirements ”functional requirements that do not lend themselves to the use-case technique; nonfunctional requirements that define the usability, reliability, performance, and supportability of the system; design constraints and other requirements ”find their home in the supplementary specification. Figure 22-1 provides a brief annotated outline of a supplementary specification. A more fully elaborated and annotated version of this document appears in Appendix D.
Figure 22-1. Template for the supplementary specification