Each predefined audit class is listed in Table A-1. The table includes the audit flag (which is the short name that stands for the class), the long name, its audit mask, and a pointer to the list of audit events that by default are in that audit class. The system administrator uses the audit flags in the auditing configuration files to specify which classes of events to audit. Additional classes can be defined and existing classes can be renamed by modifying the audit_class(4) file.