Sorry Klaus, but I'm at the limits of my understanding about how this works.
Where exactly am I placing the
if="!webvr.isenabled" ?
I've tried locating in the map layer within tour.xml:
<layer name="map" url="graphics/inmap.png" if="!webvr.isenabled"
But that has no effect - the map still shows up in webVR.
Is there another location that it needs to go? Do I have to edit the webvr.xml?