Question

what is meaning of watermark​

Answer 1

Answer:

watermark may be a sign or symbol which denote the app name or author name

Answer 2

Answer:

$\huge \fbox \red {✦ᎪɴSᴡᴇʀ✦}$

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.