Execution_Modes

   Specify an execution mode when you invoke AUTOGEN to control how
   AUTOGEN uses feedback. The following table lists the execution-
   mode options.

   Option        Description

   FEEDBACK      Specifies that AUTOGEN run in feedback mode, using
                 dynamic feedback collected during the SAVPARAMS
                 phase to make its calculations.
   NOFEEDBACK    Specifies that AUTOGEN not use feedback in the
                 calculations. The feedback from the SAVPARAMS
                 phase is ignored. Use NOFEEDBACK mode for the
                 initial system installation or upgrade. NOFEEDBACK
                 supersedes the execution-mode option INITIAL, which
                 was used in a previous version of the operating
                 system.
   CHECK_        Specifies that AUTOGEN use feedback in its
   FEEDBACK      calculations as long as the feedback is valid. If
                 feedback is suspect, AUTOGEN does not use feedback
                 in the calculations, but continues through the
                 specified end phase.
   Blank         If you do not specify an execution mode, AUTOGEN
                 uses feedback in the calculations by default.
                 However, if AUTOGEN determines that the feedback
                 might be suspect, it performs the calculations,
                 issues the feedback report, and stops before
                 modifying any parameters or system files, even if
                 you specified an end phase of GENFILES, SETPARAMS,
                 SHUTDOWN or REBOOT.