This indicator was W.D.Gann's favorite indicator. He used it on a daily
chart, and it shows the hidden support and resistance levels based on his
theory. Gann courses go for many $Thousands, and the reason is that price
respect for these levels is uncanny.
You can use the study on any time frame chart, but on smaller time frames,
the levels are too close together. When changing time frames, you look for one
where you do see the respect of price for the Gann levels. This is the time
frame you should then always use the Gann SQ9 study on.
Then you use Autopro to essentially 'Trade Between Gann Levels'. You look for
longs on top of a Gann line and shorts just under a Gann line. Remembering that
when below a line, you are looking at it as Resistance and when you are above a
line, you are looking at it as Support.
As these S/R levels are projected out into the future, the trader is armed
with a powerful tool.
It is suggested that you do an internet search for this topic to learn about
it's complexities.
Example: Forex NZD 240 minute chart
Example: ES mini futures 5 minute chart
To Download Gann Square 9 SQ9 (Price).mq4
http://www.4shared.com/file/216315675/e2e508e4/SQ9__Price_.html
To Download Gann Square 9 SQ9 (Time).mq4
http://www.4shared.com/file/216315662/659aac06/SQ9__Time_.html