Casio fx-9860GII SD Guia Del Usuario página 376

5. To change the real-time scroll setting, use the f and c cursor keys to move the
highlighting to "RealScroll". Next, press one of the function keys described below.
To specify this real-time scrolling setting:
Real-time scrolling on
Real-time scrolling off
6. Press w to finalize Graph Setup and return to the Advanced Setup menu.
3-14
Using Advanced Setup
Press this key:
1(On)
2(Off)