We have been down that road before. It is not possible to be totally specific. The more specific we tried to be, the more exceptions and borderline issues that came up.
If the words used are not clear try googling the phrase and use the "reasonable man" test. (i.e. Would a reasonable man interpert the phrase that way.)
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Reminder: Guys, this thread is not for dissussion of the rule. It is for specific questions about the rule.
My specific question about the rule is whether we can revise it.
Working with laws and rules is what I do for a living and I know the rules can be made a lot more precise. If you are willing to revisit the rules to determine what they shall actually boil down to, I am offering my help. Not everyone will like the rules in the end, but at least we will better know what to base our play on.