I am working with Sharepoint Online. In experimenting with the links panel on the left hand side of the window, I removed the links to "Documents", "Pages" and "Site Contents", expecting there to be an easy way to restore the default values if I changed my mind. But the "Add Link" dialog wants the full URL to the target location, and I can't find those values in my browser history for some reason.
What are the URLs for those locations?