Jepp, noticed and it is described either in the owner's or in the service manual.
In my understanding, rotating the handle bar raisers will lead to a more forward position. Or for those taller humans... Handle bar height, shape, width is so super individual, that normally any advise some third party is misleading.
All in all I like the adaption possibilities of the RN80 XSR900, handle bar, rear sets, brake and coupling levers, the suspension, very well equipped!
And just for double checking, this is a XSR700 forum, in which the XSR700 since 2016 is discussed. Other riders and owners are welcome, for sure.
BR
Bernd