[Feature Request] allow user to control scrolling page

Currently when user reads document in cropping margin mode, it always turns one screen when clicks screen, however, while reading serious article, most of time, user needs to refer to difference part of the page multiple times, I would suggest it should let user to control how much to scroll the page by sliding finger on screen instead of turn one screen.

Well noted with thanks. Have forwarded this to our R&D team to follow up.