How can you from printer ink and pen ink?

Q: I sent a letter to the governor for a school project, and the letter I received was in all ink, but maybe except for the signature. How can I tell if was printed or it's real?

A: wriitne will leave an impression in the paper, a sorto fo dent. prinitng jsut sprays ink, so the paper will not have this dent. jsut rub your fingers on the back of the letter nad you will feel the groove of the writing.

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