These different types of reference systems are called “milestones.” Milestones mark where to jump to in a book, and they come in many different datatypes: Bible passage, Greek lemma, Strong’s number, and many, many more. This may not seem important now, but later in this training series, you’ll learn how to leverage milestones within Logos’ powerful search engine. The Parallel resources button shows you similar resources that also have an entry for the current milestone; selecting one of them will