The "Lexicon" contains information about hundreds of items, names, events, people and places, mentioned throughout the program. Clicking a letter displays a list of lexicon items starting with that letter. The texts contain many Hypertext words, linking to other lexicon items. You may "hyperlink" as many times as you wish. Clicking the "Back" button will return you along your "Hyper" path, back to the original Lexicon item.