: If .001 is only a few kilobytes, it is likely a fake or a redirect.

: Likely refers to a specific "character" or "model" (Nita) from a developer or creator abbreviated as "SS." In many digital asset communities, "SS" can stand for "SunShadow" or similar creator tags.

If you tell me or what software you're trying to use it with, I can give you a more specific breakdown of what's inside.

: This indicates the version number . Version 0.31 suggests this is a work-in-progress (WIP) or an early-access build of a digital project.