In Pictures: 7 things we love/hate about Microsoft...
Missing features: PowerPoint audio
There are a couple of features that Office 2013 RT lacks from the x86/x64 version. Most of these are related to the way audio and video media are handled: In PowerPoint 2013 RT, you cannot record audio narration.
In Pictures: 7 things we love/hate about Microsoft Office 2013 for Windows RT