Read original post at Zubair Ahmed's Blog
If you are building Windows store apps targeting Windows 8 platform, one of the features you can add is support for Snapped View.
What is a Snapped View in Windows 8?
Here’s how MSDN defines it:
Snapped view: View states, including snapped view, enables two apps to run simultaneously side by side, so users can truly multitask and stay productive with your app all the time.