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I can’t find a link back to where I came in.

  There are a few items with no visible links to them, just because they're not relevant to the main purpose of the site; but, it's easier for me to include them here than set up a separate website to display them. The easiest options are: use the back button on your browser to return to the page you came in at; use a keyword or phrase in Search in the navigation bar to find the item again; reuse the original link that brought you to the site again.