Hey Wolfgang,i don't know,i asked AJ,i have the footswich FS13,untill now i can't find it,let's hope AJ have a solution.
But it is a very good option,no Ipad and it works very good.

gr from Holland

Yes,it's possible with an footswitch to go up and down the pdf,nice,No need an Ipad,wow so good.
FS6 or FS13 pedal,go to menu,and assign it to your own needs.