How to enable Mission Control to display full size previews

How to Disable Mission Control and Spaces in OS X.Another blog to add to my ‘how to disable’ defaults-write series
I quite often use Mission Control to help me navigate through my open apps and documents. Now Mission Control groups previews of windows from the same app together which is handy.
It also has a useful feature, where you can hover the cursor over a group of document windows and scroll up with two fingers on a magic trackpad. You will now see the group’s windows showing more detail.
You can also QuickLook a window to achieve the same effect. The problem that I have is that these ‘Previews’ or ‘QuickLook’ windows are still rather small and don’t zoom in very much.
Luckily, there is another cheeky little command we can use to toggle full size previews!
To add this feature to your Mac, all you need to do is tell Mission Control to enable ‘Full Size Preview Mode’. Using the Terminal Application from /Applications/Utilities, enter the following command:

defaults write expose-cluster-scale -float 1;killall Dock

The Dock should quit and reopen with Mission Control now in Full Size Preview Mode. This will not effect QuickLook, but will effect the scroll up to show full size previews.
If you do want to revert back to the default setting and enable the smaller previews again, just enter the following command:

defaults delete expose-cluster-scale;killall Dock

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This feature has been tested using OS X v10.8.4 which was the latest Mac OS release at the time of writing.