Just now, I finished adding Amazon’s new service, X-Ray, to my short story collection Diabolical: Three Tales of Jack Thurston and Revenge. X-Ray inserts links into a Amazon Kindle text which lead either to a Wikipedia article or to comments by the author on a character or term in the text. It’s easy to use. I like it, because in a work like Diabolical, there are many obscure terms which may need clarification to some readers. I feel this will help the reader enjoy the work more, because he/she will not need to run to a dictionary, encyclopedia, or to a search engine to find out the background on a character or term, especially if they are historical. For example, in these tales I use the names of several demons which are cited in historical works. Probably very few people would recognize the names of these demons (such as Azazel or Belial) and would need to do at least a little research to find out their significance.
This also helps with marketing my other works in which some of these characters may be mentioned. In my own comments on a character or term, I can mention in what other works that character appear and how to find and purchase those works.
Yesterday, I added X-Ray to my short story collection The Scent and Other Stories. Go to amazon.com/author/philslattery to learn more about each book and to purchase one or both.