File vitality
The feedback was quick and consistent: Marking files vital by default is a good thing. So in the next weekly release of WiX, files will get the msidbFileAttributesVital attribute by default. The FilesVitalByDefault property and -fdvital switch have been removed; in their place, SuppressFilesVitalByDefault and -sfdvital turn off the default “vital” behavior.
May 24th, 2008 at 09:28 #Joy of Setup :: Highlights of WiX v3.0.4116.0
[...] By default, files now get the “vital bit” (msidbFileAttributesVital). [...]