Shared Documents/Folders
Users with site-only permissions will not have access to edit Shared Documents/Folders, but have the ability to link to shared files on their site
Shared Documents/Folders
If a document or folder is shared between multiple sites, it restricts someone with site only permissions to edit any parts of the document/folder. You can still link to the document/folder in your content. In the Document Manager, the ‘Copy Link’ option will remain, but the edit and delete options will be disabled.