What´s the intention behind "Add a Contributing Context" in Project Planner

Hello, there is the great functionality to define a contributing context in the Project Planner. In the context of linking to another project, I understand the functionality. In the context of linking to another document, for example, an issue or a WIKI entry, I would like to be able to access this relation, for example, in the display in the Relation widget. Where else can I usefully apply or utilize this link? Thank you in advance.

 

PS.: translated by Aura, a great tool!