Vertical scrolling

[puppadrillo]

Hi,
not sure this is the right place to ask the following two questions, so I apologize in advance.

Normally, when "horizontal" scrolling is enabled, a single slide will occupy the whole screen, and this is by design. But suppose you have a long content that will not fit in the slide itself.
In that case some of the content will overflows the screen.

So the 1st question is: Is there a way to allow a slide (or simply all the slides) to be scrolled vertically, in case the content is longer than "normal" ?

A 2nd question: Is it possible to allow the navigation arrows to be always "visible"?

thanks a lot, p.