Question

what is a water mark​

Answer 1

Answer:

a faint design made in some paper during manufacture that is visible when held against the light and typically identifies the maker.

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Answer 2

watermark in computer...

A watermark is an identifying image, shape, or piece of text that overlays the document. Watermarks are usually very light so that they don't interfere with reading the text.

watermark in photo....

Technically originating in the art of papermaking, in photography, the watermark is a superimposed image, logo, or text placed over a photograph—usually as a method of identifying the image's creator.