Presentation mode for feature details to present only focussed content to an audience

As we do our Refinement sessions by presenting Aha items on a big display so that everybody can read the Specifications, it would be great if there would be something like a presentation mode to hide information which are not relevant, disturbing and only occupying space.

This feature lets an audience focus on a topic and prevents disruption and side-discussions, additionally there is more space usable for scaling up information.