Goal_Structuring_Notation
Goal structuring notation (GSN) is a graphical diagram notation used to show the elements of an argument and the relationships between those elements in a clearer format than plain text.[1] Often used in safety engineering, GSN was developed at the University of York during the 1990s to present safety cases.[2] The notation gained popularity as a method of presenting safety assurances but can be applied to any type of argument and was standardized in 2011.[1] GSN has been used to track safety assurances in industries such as clinical care[3] aviation,[4] automotive, rail,[5] traffic management, and nuclear power[6] and has been used in other contexts such as security cases, patent claims, debate strategy, and legal arguments.[5]