The ContentControlQueue is used when the content control functionality for packages has been enabled. The content control feature allows a user to specify which content files should be included in the package delivery from the Files Table by selecting Select Files from the Actions menu on the Package Content table. The content control functionality needs to be explicitly enabled using a type-based properties file as described in Package Type-Based Properties.

When the content control functionality for packages has been enabled and a package is locked (or subsequently unlocked), a new entry is added to the queue. Similarly, any change in package member content control information that is made through Package Content user interface adds new entries to the queue. When a queue entry executes, content control data for package members is persisted.