Script Injector

The Scripts menu allows you to execute scripts into your game.

To read more about scripts check this out.

You can navigate this menu by using the d-pad and when you find the script you wish to execute, press A to run it. Once you do that, it will prompt you if you wish to do that, pressing A again will execute it.

Pressing Y will bring up universal scripts, which are scripts work across most (if not all) games.

You're also allowed to provide your own scripts and place them into the SD card inside of the sdmc:/3ds/PKSM/scripts/<game> folder. You can access your own scripts by pressing X.