Addendum:

This approach works with virtually all installer packages that make use of InstallShield. The '-r' is for the recording of the silent install and the -s runs the silent install silently. You can also specify on the command line where to save/load the SETUP.ISS from/to. You could therefore have multiple SETUP.ISS within the same install directory and vary the actually used .ISS file.

See http://www.appdeploy.com/tips/detail.asp?id=18 for a complete list of switches.
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There are two types of vessels, submarines and targets.