Possible Clues:

• Appendices at back of book
• Back-of-the-book supplements
• Items added at end of a book
• Supplements tot with Scotch and soda finally
• A divine finish to a number of supplements
• The last thing you expect to find in a book?
• How a learned divine may finish off a lot of things put on
• Items added to the end of a text
• Might a divine finish a few supplementary bits?
• A divine conclusion before a collection of extra material