[weiwei]

Thank you MrPaul for the link, these links wuld give move details to others who would like to find out more about this rule.

Brownsfan091, thanks for that insightful input. You pretty much nail it. And I totally agree with you on that constantly monitoring and detailed documentation are key to utilize this rule fully.

The basic idea behind this is to present an workable rule for people to focus on, and rest is up to each individual to carry it out.

weiwei

PS: I am willing to post some more example if there is interest on this topic. But for now, I will stop right here and leave the thinking upto each individual.