Copy?

Hello!

Several copy- save-related questions:

1. Is there a clipboard for moving things from one design to another?
2. How do I copy snippets from other designs, whether my own or other people's?
3. When I make a component from a datasheet, how do I save it?  Copy it?  Share it?
4. How can I find models others have made from datasheets?
5. How do I Save As?
6. Is there version control?

Thanks!

Bruce