>>>Ignored all my replies, as usual.
>>
>>Unfair!
>>You suggested Sergey's idea was better and I suspect it is.
>
>Hi Don,
>
>I answered your question as you asked it, spent time researching on this problem and you didn't even aknowledge my replies. Sergey's suggestion was absolutely obvious,

Sergey's answer was obvious to Sergey, obvious to many others, and eventually obvious to you. But it obviously was not obvious to Don or he wouldn't have posted the question.


>I would not mark such simple thing as a solution.

That's your perrogative. Just as it is Don's to acknowledge Sergey's help with the stars.