The last of Justinian’s legal reforms, which followed directly after the publication of the Digest, was the creation of the Institutes (institutiones iustiniani), which was effectively an index to the Digest, designed for the use of trainee lawyers in the official imperial law schools at Beirut and Constantinople. This text served as a practical primer to the new law, and made sure budding young lawyers would be taught to think exactly as Justinian wished.
