Homebrew How Does APT App Jumping Work?

[gudenau]

How does the 3DS handle APT_PrepareToDoAppJump and APT_DoAppJump? What happens when both of these are called? I have managed to launch apps with these service calls, but I would like to mess with the launched app; so an understatnding of how these work under the hood is in order.

The more technical the better.

Edit:
I did ask elsewhere.

Edit 2:
I might have just figured out what I wanted...