inst.README:
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This optional installation startup script helps you to select the 
appropriate patch subsystems for installation.  It does not 
perform the actual installation of the patches.

The script uses the "install A" and "keep S" commands.  These will:

1.  Select all new patches which replace patches that are currently 
    installed on your system.
2.  Select any patches which affect product subsystems that are
    currently installed on your system.
3.  Not install already installed subsystems.

Silicon Graphics recommends that you install all the appropriate patches
from the set, rather than selectively installing patches.  

You do not need to install any patches that the script does not select,
because the unselected patches do not apply to the software installed
on your system.