zoom function in samsung

I am interested in buying this tv
http://www.walmart.com/ip/Samsung-46...6E550/20554021
samsung 46 inch at walmart but they dont let you play with the remote to tweek it. I am looking for a zoom screen function, one in which i can make the picture look bigger on the screen. What is that called besides zoom? and does anyone know if it has this feature?

thanks
zoom function in samsung

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