Brian, I agree with everything you've said, with one possible exception - as I see it, the presence or absence of HL precedence information is appropriately designated a "quality" item, since basic "path of the market" info is either present (in theory), or not. Not having that information is a data quality fault, or rather a data format design fault. That's basically what Herman said (OHLC is obsolete) and I started writing in agreement with him, only I wrote a bit more than I set out to!
Thanks for your comments.
