Does anyone here know about this file (under "admin") in detail?

It looks like it's been setup for creating new product types, and as a relative newcomer to php I thought I'd just ask before going too much further.

Whilst there's some code there for it, it doesn't look very convincing, so unless I'm missing something (which is quite possible) I think it's just the beginnings of something, rather than actually functioning properly. Is that right?

Regards
Mark