Trend lines differ from other studies in that to draw or manipulate a trend line, you must change the active chart window to trend line, or drawing, mode. To enter trend line mode, follow these steps: 1. From a chart window, display the 2. Select Trendlines. Alternatively, you can change to trend line mode by typing the .TREND command and pressing Selecting Trendlines, or typing the .TREND command and pressing Entering Trend Line Mode