Constants -- predefined constants
AUTH_IDLED
     -1
    
     Returned if a session exceeds its idle time.
    
AUTH_EXPIRED
     -2
    
     Returned if a session has expired.
    
AUTH_WRONG_LOGIN
     -3
    
     Returned if the Auth Container in use is unable to validate the
     username/password pair supplied.
    
AUTH_METHOD_NOT_SUPPORTED
     -4
    
     Returned if the requested function is not implemented by the Auth
     Container in use.
    
AUTH_SECURITY_BREACH
     -5
    
     Returned if the asvanced security checking detects a breach.