Below-the-Line Advertising

In organisational business and marketing communications, Below the line (BTL) is an advertising technique. It uses less conventional methods than the usual specific channels of advertising to promote products, services, etc. than Above the line (ATL) strategies. These may include activities such as direct mail, public relations and sales promotions for which a fee is agreed upon and charged up front.
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all advertising by means other than the five major media - the press, television, radio, cinema and outdoors; below-the-line advertising employs a variety of methods - direct mail, sponsorship, merchandising, trade shows, exhibitions, sales literature and catalogues, and so on. See Above-the-Line Advertising.