A poster is any piece of printed paper designed to be attached to awall or vertical surface. Typically posters include both textual andgraphic elements, although a poster may be either wholly graphicalor wholly text. Posters are designed to be both eye-catching andconvey information. Posters may be used for many purposes. They area frequent tool of advertisers (particularly of events, musicians andfilms), propagandists, protestors and other groups trying to communicatea message. Posters are also used for reproductions of artwork,particularly famous works, and are generally low-cost compared tooriginal artwork. Another type of poster is the educational poster,which may be about a particular subject for educational purposes.