[kalpar]

Go to Settings->Touch & Pedal Settings->Touch Actions and set the bottom middle to "Go forward one page". That should function for what you are asking for as long as you are okay with full page turns. Otherwise I'll have to add the "Go to next page" action as one of the supported touch actions for other parts of the screen such as the middle bottom.

Mike

Mike,

Thanks for your help.  I am delighted and feel a bit embarrassed to find that the app already has the feature I need and I didn't know about it.  Anyway I did some testings, following your instruction and want to report some unexpected issues:

Why does "Go forward one page"(bottom left) seems to work differently from "Go to next page"(right)?  The missing page turn animation is a minor problem.  A more serious issue is that the target pages these two actions bring may be different.  Let me give you an example:  Again I use "vertical scroll mode", so my current screen shows  page 1 (bottom part) on top of page 2(top part).   Assume the screen does NOT show bottom of page 2.  In this case, "Go to next page" action always brings a full view of page 2.  But "Go forward one page" may bring page 2 or 3.  My limited experiments seem to suggest that the result may depend on  how much of page 2 has been shown when the action is taken.  If it is less than ~50%, the action brings page 2.  Otherwise, I get page 3 instead.

  You probably have a good reason why these actions must be different.  But from my perspective, both actions should bring a full view of page 2, as long as the full view has not been shown already.  

I hope you would once again help me with this issue.  
I have to say this is a great app with great support coming from you.