OK. Thanks. Guess that was obvious. I was asking only because running my Rift S through Steam to play MSFS 2020 involves telling Open XR where to launch the Steam driver that then launches the Oculus driver that then runs through Open XR to ultimately interface with MSFS 2020. Given that the first headsets supported were WMR headsets, I thought there might be a WMR driver in there somewhere too. 
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