Because the phrase "develop a feature" is a bit broad in this context, could you clarify what you're looking to do? I want to make sure I give you the right kind of help.
Information regarding a specific (like a game or utility) that uses this naming convention?
It looks like you're working with a specific file——which sounds like a segment of a larger multi-part archive , likely for a software project or a game mod.
guidance on how to programmatically handle RAR archives or "part" files?