When WinZip is installed and Optimize for best compression has been selected as the default, the DefaultCompressionMethod string value in HKEY_LOCAL_MACHINE\SOFTWARE\Nico Mak Computing\WinZip\WinZip is given a value of 1. For Legacy the value is 0.
The installing user will have values propagated from this key in HKEY_LOCAL_MACHINE to HKEY_CURRENT_USER\Software\Nico Mak Computing\WinZip\WinZip during the install. Other users on the same computer will have these values propagated when they first run WinZip. If the user changes the default compression setting from that which was set at install, a DefaultCompressionMethod string will be written in the corresponding key of his or her HKEY_CURRENT_USER key with the appropriate value. For example, if you install with optimize for best compression the value of DefaultCompressionMethod in HKEY_LOCAL_MACHINE will be 1. If a user then configures this to be Legacy a DefaultCompressionMethod string will be written in HKEY_CURRENT_USER with a value of 0. Otherwise DefaultCompressionMethod will not be present in HKEY_CURRENT_USER.
Additionally, a ZipCompression string value will be present in HKEY_CURRENT_USER\Software\Nico Mak Computing\WinZip\WinZip with a value of 9 for Best method compression and a value of 0 for Legacy.
