Book to reference, interaction design 5th ed.

Requirements specification has two aims:

A. a system that when developed can support users in achieving their goals and the system to accomplish those goals

B. s set of standards that do not radically change in the time it takes to do some design and get feedback on the ideas

C. understanding users within the context of their activities and a set of stable requirementsthat form a solid basis to start designing

D. a set of stable requirements that form a basis to start designing and understanding the activities of users within the ontext

E. understanding users, their activties and the context of that activity and the major document specifying the rigid prescriptions of the system