The Copy relationship Gallery Tutorial TRAIL: Webel's ultimate guide to Systems Modeling Language (v1) with MagicDraw/Cameo Section 16:01: Requirements engineering in SysML Slide kind SysML Requirement Diagram
Since the concept of requirements reuse is very important in many applications, SysML introduces the concept of a slave requirement. Source OMG Systems Modeling Language (SysML) 1.6
