Quote from Spydertrader:
it appears as if some might confuse, "What must come next?" with an expectation of what the next bar will do in terms of Open, High, Low, Close and Volume. When, in fact, WMCN refers to what the market must show the trader in terms of the sequences which unfold from Point One, to Point Two, to Point Three and beyond - into the channel / traverse.
- Spydertrader

Quote from treeline:
I updated the ES 5min Pace Lines as of the close on 8-15-08. Volume levels have been lower during the non-dominant up Traverse which began in mid-July, just as we would anticipate.
VDU: up to 8,271
DU: 8,272 - 13,197
Slow: 13,198 - 18,559
Medium: 18,560 - 26,292
Fast: 26,293 - 41,457
Extreme: 41,458 and above