Will we be able to set the review permissions in this knowledge base?

And a few more questions:

Does Spiceworks knowledge base have the mulilevel categorization?

Is there a possibility to attach files?

Does it have tags?

What about the updates revision?

Will we be able to set the permissions/access per wiki category?

Howe flexible the search engine is? What are the best search options?

Does it have integration with e-mail?

Thanks!