When you edit a library item, you can update all documents that use that item. If you choose not to update, the documents remain associated with the library item; you can update them later.
You can rename items to break their connection with documents or templates, delete items from the site’s library, and recreate a missing library item.
Edit a library item
Update the current document to use the current version of all library items
Update the entire site or all documents that use a particular library item
Rename a library item
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Delete a library item from a libraryWhen you delete a library item, Dreamweaver removes it from the library but doesn’t change the contents of any documents that use the item.
Recreate a missing or deleted library item