Level5Outline is a tool that allows you to convert .sil (XCSL) as a .json to read the file more easily,
you can also convert .json to .sil!
Open a CMD window where the .exe is located and type this:
Level5Outline.exe [option] [input_path]-h: to show help menu
-d: to decompress .sil to json
-c: to compress readable json to .sil
Example
Level5Outline.exe -d 000.sil
Level5Outline.exe -c 000.json