What is Accelerating!?

[Barefoot On A Plane]

Please explain Accelersting (Genie + reservations) I have tried looking it up on here but can’t seem to get a clear idea of what it is. Can someone please explain it. Thanks.

 

[BriannaRuth]

This thread explains it well:

https://www.disboards.com/threads/fishing-accelerating-modifying-and-mep.3920707/