the live slideshow is hiding some parts of the slide when changing the window of the browser (chrome) (windows 7 32bit , python 2.7 , jupyter 4.0)
no problem when maximizing the window , but with some kinds of projector the screen size change and cause this issue..
any help :)

On this section https://github.com/damianavila/RISE#configure-your-own-options you will have some info about how to customize height and width, I guess it is the best option for you, just use the projector screen size and check if it fits better.
and/or use your browser's shortcuts to zoom in/out, like on a mac command+ and command- can help too
and/or use your browser's shortcuts to zoom in/out, like on a mac command+ and command- can help too
That's correct as well, we should probably add this note to the README.
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and/or use your browser's shortcuts to zoom in/out, like on a mac command+ and command- can help too