Correct structure of Pack/Index file

[Metin2 Dev 12289]

Hey devs!

What is correct structure of Pack/Index file and how it works? I have seen a few examples and I'm a bit confused.

What are the differences between those:

*
ETC
*
PC
*
Locale_US

D:/Ymir Work/UI/
ETC
D:/Ymir Work/PC/
PC
Locale/
Locale_US

Data/
ETC
Data/
PC
Data/
Locale_US

And which way is the best to use?

Thanks for all your replies.

[Summex 72]

Would be interested in it aswell if there are any differences between the possible ways at all