- Classification/Cataloging Update (CC): Represents Superintendent of Documents (SuDoc) classification number changes
- What Happened to? (WH): Represents miscellaneous information (e.g., delays in distribution, production/publishing issues) that may be useful to depository coordinators as they maintain their depository collections. This category is used infrequently.
- Updates to the List of Classes, New Items (UN): Represents new depository item numbers that have been recently created and added to the List of Classes.
- Updates to the List of Classes, Misc. (UM): Represents miscellaneous updates to the List of Classes (e.g., title changes, discontinued or inactivated depository item numbers or SuDoc classification numbers).
For more information on WEBTech Notes, go to the article under Instructions.