This targeting allows you to set up your line item to target certain operating systems and operating system versions.
You can include operating systems and their versions into targeting and exclude them. When you target an operating system, you can exclude some of its versions from targeting at the same time. Likewise, you can exclude an operating system from targeting while targeting certain versions of this operating system.
By default, all operating systems and versions are targeted.
OS Version reporting keys to analyze performance in u-Slicer.