Yes, attention key.
One place I worked at used several different attention key programs. I.T. had two different ones. One would pop up a menu with programming/system related options. Another would pop up an I.T. Help Text program where you could scan for application or system keywords or add more or edit existing.
Very useful and creative.
This works because it is set at the user profile level (system value level) before any other programs start and is available at any time during the interactive session.