The runway identifiers are somewhat difficult to find depending on where you look for it. The runway IDs are printed on the runway ends on  the SD  plates in a tiny font, and I can also find the information under the AIP pages but its a bit hard in flight. It would be handy  to see this information on the header on the "Airfield" pages, next to the airport elevation (at least for airports with only one or two runways) . Maybe also the tower frequency could be displayed here as well. I do appreciate that the RW ID for et least one runway pops up under the approach tool window, but sometimes this is not the RW in use....