Hi Mathieu,
Please forgive me if I'm being dim here.
From time to time I try to turn off a grid activation using the manual slider (usually when I'm working up a grid I don't wire up the activation whilst I play with it)
Once the grid is "in production" the @ga_ gets connected to some control somewhere.
When I want to have a tinker with that grid I go to slide down the activation slider and the helpful hint shows that it is linked.
What would be AMAZING is if the controlling source(s)/grids were identified in this hint.
A variation on the previous suggestion, slightly different use case, hopefully useful.
Many thanks for your wonderful software.
I'll keep posting suggestions in case you find them useful. I won't take ofence if you don't agree with my suggestions :)