/sys$common/syshlp/SYSGEN.HLB

    Assigns a value to a system parameter in the SYSGEN work area.

    This command does not modify parameter files, the current system
    parameter file on disk, or the active system; for information
    about performing these modifications, see the WRITE command.

    Format

      SET parameter-name  value

Additional Information: explode extract

Parameters Qualifiers Examples
/OUTPUT
/STARTUP