MetaStock version 18 introduced new charts. The way we draw line studies now has changed for the better. You now simply click at the start and end points (or 3 clicks for the ones requiring it). You no longer need to hold down the mouse button while drawing. To draw a line study in a chart, follow the steps below:

MetaStock v18 --> Current

1. Open MetaStock. 
2. From the Power Console, select the Charts button.
3. Open the desired chart.
   • Type in the instrument using the Instrument(s) field at the top.
   • Select instrument using Custom Online Data Lists or Public Online Data Lists.
   • Select local data instrument using Local Data Lists.
4. From the Trendline/Line Studies Toolbar on the left side of MetaStock, select a line study (e.g. Trendline or Fibonacci Retracement).
5. Click at the desired start point, move the mouse to the desired end point and click again.

Or 

1. Open MetaStock. 
2. From the Power Console, select the Charts button.
3. Open the desired chart.
   • Type in the instrument using the Instrument(s) field at the top.
   • Select instrument using Custom Online Data Lists or Public Online Data Lists.
   • Select local data instrument using Local Data Lists.
4. Open the Insert menu
5. Select a line study (e.g. Trendline or Fibonacci Retracement)
6. Click at the desired start point, move the mouse to the desired end point and click again.

Keywords: MetaStock DC, MetaStock RT, trendline, line study, chart