2.71 sharp edge export without disconnected faces?

One of the features of 2.71 said that it can export sharp edges without them disconnecting. This sounds good for transferring models to other modeling programs other than blender.

But I’m not sure how to access this feature. Do i need some special settings when exporting?

Smooth/Sharp Edges http://wiki.blender.org/index.php/Dev:Ref/Release_Notes/2.71/Modeling
Export as .fbx http://wiki.blender.org/index.php/Dev:Ref/Release_Notes/2.71/Addons