Please note that each product has slightly different installation options. New switches were introduced to PDF-XChange Editor at build 308, as detailed this the V5 products Manual here (Historical). The switches and options for MSI installers are detailed in a help file that is part of the installer for each product. Click the Help button during setup to access the help file:
Alternatively, use the /? switch at the command line to view available options.
The below are other KB articles that detail important facts/handling rules about MSI switches.