Those 2 XMLs will add in the following systems
- Gameboy Hacks (
gbh) - Gameboy Color Hacks (
gbch) - Gameboy Advance Hacks (
gbah) - Genesis Hacks (
genh) - NES Hacks (
nesh) - SNES Hacks (
snesh) - Switch (
switch)
They are to be placed in ES-DE/custom_systems (Download them and copy/paste them into that directory, make sure you don't have them end as .txt, they have to be .xml).
After adding the custom system files make sure to fully close ES-DE and restart it for the custom system files to load (not just rescan roms).
Why the hacks folders? I come from JelOS and these folders were present, art-book-next-es-de also has support for those now. This also means other themes may just display a generic image for hacks