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in the toolbar, then choose Add Bookmark.Choose where to add the bookmark, and rename it if you like.
Add this page to: Click the pop-up menu and choose a folder. The default is Favorites.
Rename the bookmark: Enter a brief name that will help you identify the webpage.
Add a description: Enter more details as an optional reminder about the webpage.
Click Add.
You can also add a bookmark in the in the toolbar, then click the Bookmarks button 
.
Or, choose Bookmarks > Show Bookmarks.
Click the bookmark in the sidebar.
You can also choose it from the Bookmarks menu.
Add a bookmark folder
In the Safari app
on your Mac, click the Sidebar button on your Mac, click the Sidebar button restore them from an earlier version at any time.