Symantec WISESCRIPT EDITOR 8.0 - REFERENCE FOR WISE PACKAGE STUDIO V1.0 Reference page 167

WiseScript Editor Reference
/S
/R
/U
Example:
"C:\Program Files\Application\Unwise.exe" /A "C:\Program Files\Application\Install.log"
Application Uninstall
You can specify the title of the Uninstall dialog box that appears. Type the title at the end
of the command line after all other options. In the example above, the title would be
"Application Uninstall."
Silent mode. The uninstall proceeds silently with no splash
screen, no dialog boxes, and no end user choices.
Rollback mode.
Removes the Select Uninstall Method dialog box, which means
the end user does not see options for a custom, automatic, or
repair uninstall.
Quick Reference
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