Search notes:

Optional features of Windows

Opening the optional features settings GUI from the command line

start ms-settings:optionalfeatures

See also

Hyper-V
OptionalFeatures.exe, Fondue.exe, dism.exe: features control panel, %SYSTEMROOT%\System32, Windows as a service, Windows settings, Docker on Windows
Virtual Machine Platform is required for Subsystem for Linux, version 2. This feature might be enabled with 
dism.exe /online /enable-feature /featurename:VirtualMachinePlatform /all /norestart
The PowerShell command noun windowsOptionalFeature

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