Sadly, I don't remember anyone, including myself, writing it. Although it does look arcane, it's quite simple nevertheless.
Basically, each row of the table represents a key on your 3DS. And each column represents an 'action'. Each time you press an 3DS key, it's going to trigger some actions that are mapped to it (if any). An action is just an NDS key press.
Here is a couple of examples of the remapper tables, I hope it'll become clear.
- Unmap everything (no matter which keys you press, the game won't detect them, making it effectively unplayable)
- Nintendo's default Each standard 3DS key is mapped to its NDS counterpart (i.e. to itself). The CPad is mapped to the DPad. You get the same by not using any patches at all.
- Invert the DPad (i.e. if you press `DPad Left`, the game will see it as if you would actually press `DPad Right`)
- Swap L and R
- Pressing 'Select' will trigger all keys at once
- ZR/ZL are mapped to R/L, and the CStick is mapped to the DPad
As usual, when you're done with the table, just copy the cheat code at the bottom and insert it into the usrcheat.dat file via R4CCE or something else