About sharing in Google Docs : Sharing - Google Docs Help - 0 views
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click Reset link. And just like a phone number that's been changed, you may need to update a few people.
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Anyone with the link is like an unlisted phone number
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Public on the web Set a doc to public if you want to make it publicly available to anyone. Public docs may get indexed by search engines (like Google Web Search), can show up in search results