B. Write the true and false.
1) The purpose behind using a watermark is to avoid duplicate copy. …………………
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A watermark is an identifying image or pattern in paper that appears as various shades of lightness/darkness when viewed by transmitted light (or when viewed by reflected light, atop a dark background), caused by thickness or density variations in the paper.[1] Watermarks have been used on postage stamps, currency, and other government documents to discourage counterfeiting. There are two main ways of producing watermarks in paper; the dandy roll process, and the more complex cylinder mould process.
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A watermark is an identifying image or pattern in paper that appears as various shades of lightness/darkness when viewed by ...
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