https://www.bleepingcomputer.com/news/microsoft/how-to-enable-windows-10s-hidden-features-using-mach2/

07/11/20 Update below. This post was originally published on April 19th, 2018. It has been updated to reflect the latest version of Mach2 and the most current Windows 10 build.

Windows 10 builds, especially Insider builds, contain many hidden features used by Microsoft to test or developer new features that are not officially released yet. These hidden features, though, are not enabled by default and require a special method to activate them.