Quote from makosgu:
The channel defines what's right and left. From what I've read, points 1 and 3 define the left side of the channel and thus point 2 is on the right side. Thus an R2L would be the price displaying a Right 2 Left traversal of the channel (the car bouncing off the right guard rail and heading towards what is believed to be the left guard rail). The channel itself is a form of the Interim Trend, also know as IT.
Just for the record, this is incorrect. Points 1 and 3 are ALWAYS on the RIGHT side of the channel. Point 2 is always on the LEFT. A channel always begins with a R2L (right to left) traverse from pt 1 to pt 2, followed by a L2R traverse to point 3. When we have points 1,2 and 3 we can draw the channel. The convention is the same for both long and short channels.
example attached