More information on the sandbox property of the iframe element is available at http://msdn.microsoft.com/en-us/library/windows/apps/hh441129.aspx.
Excellent resources to help with Windows Store app development are the Windows SDK samples at the following location: http://code.msdn.microsoft.com/windowsapps/Windows-8-Modern-Style-App-Samples.
Taking some time and working through the samples is worthwhile. Unfortunately, they aren’t sorted in any particular order after they’re downloaded. As we move through the book, the folder names of the examples that are relevant to the topics of that hour are called out in the “Further Exploration” sections. The samples of interest for this hour are
- Navigation and navigation history sample
- HTML page controls sample
- Integrating content and controls from web services sample