Slides.com is focused on the presentation. The audience is not typically interacting directly with the deck.<p>When you create a deck, there is a pretty good tutorial explaining how the interface works, including what spacebar and escape do.<p>The real advantage of the service, for me, is the support for embedding any digital media you want into a slide via iFrames, and the ability to use your phone&#x2F;tablet to advanced slides and see speakers notes if your venue did not provide you with a clicker.<p>It  also has another pretty neat feature where audience members can pull up the presentation on their laptops&#x2F;tablets to follow along, and their slides will automatically advance to match my progress through the deck.<p>I&#x27;m just trying to explain why its very much a tool for the presenter, not the presentee.<p>Edit: Slides.com is a locked down instance of reveal.js<p>Here is a link to their deck, explaining all of its features <a href="http:&#x2F;&#x2F;lab.hakim.se&#x2F;reveal-js&#x2F;#&#x2F;" rel="nofollow">http:&#x2F;&#x2F;lab.hakim.se&#x2F;reveal-js&#x2F;#&#x2F;</a>