New in version 3.4.
Visual Studio Windows Target Platform Minimum Version
For Windows 10. Specifies the minimum version of the OS that is being targeted. For example 10.0.10240.0. If the value is not specified, the value of CMAKE_VS_WINDOWS_TARGET_PLATFORM_VERSION will be used on WindowsStore projects otherwise the target platform minimum version will not be specified for the project.
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https://cmake.org/cmake/help/v3.19/prop_tgt/VS_WINDOWS_TARGET_PLATFORM_MIN_VERSION.html