Reuse of requirements in the context of product lines of a complex system

this paper is about Product lines. A product line is the development of products that have commonalities. It is based on reusing engineering artifacts (requirements, architecture, tests…) and on managing variants of products. The development of a set of products rather than developing single products independently, which minimizes costs and completion time. This paper is about reusing a set of common requirements. It describes the different techniques for requirements reuse and a panorama of the different tools. It presents an implementation in DOORS.