The letters must be handwritten in Portuguese using blue or black ink ballpoint pen, with up to 800 words in letter format.

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Users can also personalize photos by leaving handwritten notes on the backside of a photo using the S Pen.

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The possibilities are limitless, as more and more application developers understand the power of the pen and multi-touch combination - for example, picture a unique way of sending personalized handwritten notes on Facebook, or even the fun of playing Farmville by drawing in your own crops or scarecrows.

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