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Watermark. 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 ...
Wikipedia:Public domain image resources. Public domain image resources is a copy of the master Wikipedia page at Meta, which lists a number of sources of public domain images on the Web. Public Domain images should be marked with the Public Domain Mark 1.0.
No such thing as a free lunch " No such thing as a free lunch " (alternatively, " There ain't no such thing as a free lunch ", " There is no such thing as a free lunch " or other variants) is a popular adage communicating the idea that it is impossible to get something for nothing. The acronyms TANSTAAFL, TINSTAAFL, and TNSTAAFL are also used.
Types and uses Coupons offer different types of values, such as discounts, free shipping, buy-one get-one, trade-in for redemption, first-time customer coupons, free trial offer, launch offers, festival offers, and free giveaways. Similarly, there are varied uses of coupons which include: to incentivize a purchase, reduce a price, provide a free sample, [11] or to aid marketers in ...
Coupon collector's problem. In probability theory, the coupon collector's problem refers to mathematical analysis of "collect all coupons and win" contests. It asks the following question: if each box of a given product (e.g., breakfast cereals) contains a coupon, and there are n different types of coupons, what is the probability that more ...
Shop these 9 secret deals only available to Amazon Prime members — starting at just $8. We all know that having an Amazon Prime membership means free two-day shipping and tons of entertainment ...
The village weaver ( Ploceus cucullatus) is a species of bird in the family Ploceidae. It is found in much of sub-Saharan Africa and has been introduced to some islands in the Indian Ocean and the Caribbean. Village weavers forage and roost in large groups, often with other weaver species.
Free content. Logo of the Definition of Free Cultural Works project. The logo on the screen in the subject's left hand is a Creative Commons license, while the paper in his right hand explains, in Khmer, that the image is open content. Free content, libre content, libre information, or free information is any kind of mind work, such as a work ...