Zanac hack - What's the SRAM for?

[8.bit.fan]

Hi everyone,
For the life of me I can't figure out what the SRAM function is for for the "Zanac/Zanac - FDS/NES + SRAM" hack.
I've checked the scores and it wasn't that either.

Here's the hack:
http://www.romhacking.net/hacks/2624/

Does anyone know what the SRAM saving is for?

Thanks!
8-bit fan