[rik]

Assuming you are already in the vertical scrolling display mode, I think what you will want is the "Scroll Down ot Turn Page if at Bottom" pedal action.  Select that for your pedal under Settings->Touch & Pedal Settings->Pedal Actions and then change the Scroll Amount to 50% at the top of the screen (or whatever amount you want per pedal press). You can also control the scroll speed.  Let me know if this gets you the behavior you are looking for.

EDIT:
Looks like Johan beat me to the punch

Hi Mike,

Thanks for your patience but as I said in my original post 'I have searched through the manual and the forums and have seen reference to setting "vertical scrolling mode" which seems to be what I want but I cannot find a setting for that anywhere.' so I can't get past first base

If you can tell me how to set vertical scrolling display mode I'm sure I can work out the ped settings.

Thanks