[CANSLIM] When is the correction over?

According to today's Big Picture:



"The focus now shifts away from distribution days and toward a
follow-through. That's a market surge in higher volume than the previous
day, confirming a new uptrend."



I thought an uptrend is only established with TWO such days: one to start
the attempt, and one four to seven days later. And, each day must be at
least a 1% gain?



Is IBD changing their rules yet again? If the market were to close 1% higher
today on higher volume than yesterday, will we switch back to "Market in
confirmed uptrend" after only one day in correction??