The trendline is drawn manually using the trendline drawing function provided with the MT4 platform. There are three line drawing functions provides with the platform: Vertical Line, Horizontal Line, and Trendline. These are represent by three buttons on the upper left toolbar with the appropriate symbols. The trendline function is represented by a diagonal line "/ " foward slash symbol. When the trendline is drawn it is registered in the program by a number in the Object List, for example, Trendline 45321. The Object List can be accessed by right clicking on the chart and selecting Object List. The Script could reference the trendline by its reference number.