UtterEvergreen1 explained the filenames, thanks!

Signed-off-by: Dexrn ZacAttack <[email protected]>

LCE/Saving/Split Saves.md

@@ -1,8 +1,23 @@
 # Split Save Format
-Not much seems to be known about split saves, so some info may be inaccurate.
+Not much seems to be known about split saves, so some info may be inaccurate.   
 
-Split saves are just region files that are compressed with special RLE, it seems.
+- Split saves are only used on Xbox One, PlayStation 4, and Nintendo Switch edition, although there is a symbol named useSplitSaves on Wii U Edition, which apparently does not do anything. 
+- When split saves are used, regions are not saved in the save file, instead outside in their own seperate files, which use a [specific name format](#name).
+- Additionally, split saves are just region files that are compressed with special RLE, it seems.
 
+### Name
+
+`GAMEDATA_DDDDXXYY`
+- `DDDD`: An int representing the dimension (in decimal):
+  - `0000` for the Overworld
+  - `0001` for the Nether
+  - `0002` for the End
+- `XXYY`: 2 shorts representing the X and Y coordinates of the region (in hexadecimal).
+
+
+Thanks to [UtterEvergreen1](https://github.com/UtterEvergreen1) for helping out and explaining this.
+
+### Format
 | Name | Size (in bytes) | Description |
 | :-:|:-:|:-:|
 | Decompressed Size | 0x04 (uint) | |