title: How can a WiX based windows setup be limited to install only silently?
body: <p>WiX can be installed silently by passing in a flag, but can I design the setup in such a way that it will run silently by default, require the flag, or otherwise prevent the user from attempting to install it non silently?</p>
  
  <p>reason: This is to be released as a distributable for other software projects to include in their application, and we would like to avoid any expectation of localizations/ui issues/ etc.</p>