Merry Christmas my dearest friends
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to communicate and understand using new media
A related term is "graffito," which involves scratching through one layer of pigment to reveal another beneath it. This technique was primarily used by potters who would glaze their wares and then scratch a design into it. In ancient times, graffiti was carved on walls with a sharp object, although sometimes chalk or coal were used. The Greek infinitive γράφειν - graphein - meaning "to write," is from the same root.
Source:Wikipedia