"(note to Mark: BTW, I can't seem to edit what I've written. I wanted to correct a couple of typos on one comment and also to apologize for a personal frontal attack to Rogerdoger. I thought you locked down this discussion and that was the reason for the absence of the "edit" link. Maybe it's just my computer or my very limited technical know-how.) EDIT: The link just appeared again and worked!"
The edit function works for a limited time (20 minutes, IIRC, though perhaps less). This is to keep folks from going back long after the fact to "correct" incorrect market calls.
Mark