Usage: AuditPol /backup /file: This command backs up system audit policy settings and per-user audit policy settings for ...

Usage: AuditPol /backup /file: 
 This command backs up system audit policy settings and per-user audit policy settings for all users and all auditing options into a file. The backup will be written to a CSV-formatted text file. 
 Options   /?               Help (context-sensitive).   /file            Specifies the name of the file to which the audit policy                    will be backed-up. 
 Example:   auditpol /backup /file:c:\auditpolicy.csv