Publisher content includes a Globally Unique Identifier (GUID) for each question. GUIDs are useful for identifying questions from a textbook publisher for several reasons:
- Uniqueness – GUIDs are guaranteed to be unique across textbooks, ensuring that each question can be uniquely identified.
- Version Control—Textbook publishers may update questions or create new versions of textbooks. GUIDs ensure that when a publisher updates their content, it is automatically updated in an instructor's test.
- Assisting Support – While publisher content undergoes rigorous reviews, the GUID allows our support team to identify the question and relay any feedback to the publisher.