Compartmented Mode Workstations Access Control and Labels Access control is the ability to selectively allow other users access to information. A single user may be granted access to a file, or may be excluded from a group that has access to a file. Labels are security-related information which is associated with objects like windows, processes, files, or devices. The ability to associate security labels with system objects is also under security control.
Mandatory labels are static for the particular object.
Information labels may change as data is put into the object.