AI overview
I don't have access to the specific content of "Template:Cc-by-sa-2.0" from Wikimedia, so I cannot provide an accurate overview based solely on what you've provided. To write an accurate 2-sentence explanation, I would need to see the actual template content or documentation describing it. If you can share the template's text or description, I'd be happy to create that overview for you.
AI-generated from the Wikipedia summary — may contain errors.