The price development is decided by three lines, a red, blue and green line. Briefly, the price is upward when the green line is above the other lines and downwards when the lines are reversed; the lines are illustrated in the graph.
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The indicator is called “the Alligator” because the three lines represent the Alligator’s chap, teethes and lips.
The green line is the Alligator’s lip: when the Alligator is hungry it opens the mouth and starts to eat; the green line increases and the red and blue line falls; it is an indication that the price will begin to rise.
When the Alligator finished eating it closes the mouth; the green line decreases and the red and blue line rises; it is an indication that the price will begin to rise.
The lines are in more details described at this link.
