Draw a main line from an important bottom and top

Gann Square

These are up lines and down lines drawn from the left corners of a square (or retangle) defined by a line drawn from (A-B).
The sides are divided by the Divisions number in the Gann Square Parameters window.

Like the Gann Fan these lines provide support and resistance and as one angle is penetrated it is expected that prices will move to the next angle.

In the parameters window you can change the color and thickness of the lines as well as whether or not you want to extend the lines to the end of the chart.