On the Boeing 747 there is a line of buttons above the PFD. The leftmost, WXR, is weather, the rightmost, TERR, is terrain.
What is the meaning and function of the in-between buttons, STA, WPT, ARPT, DATA and POS?
-STA is for VOR’s/NDB’s.
-WPT/ARPT will show nearby waypoints/ airports in the ND.
-DATA is for constraints like airbus. Will show the restrictions of a
-SID/STAR/IAP
I dont know how POS works.
Hope this help! 