Use Case Diagram: inheritance relation between an actor and a use case (and vice versa)

Hello,

On July 21, 2020, I uploaded TTool from https://ttool.telecom-paris.fr/preinstall.html .

Use case diagrams: It's possible to draw an inheritance arrow from a use case to an actor. Similarly it is possible to draw an inheritance arrow from an actor to a use case.

Regards

Pierre de Saqui-Sannes, ISAE-SUPAERO, Toulouse, France.
Submitted by external user pdss@isae-supaero.fr