Could somebody comment on this? Allen or anyone else?

Pcelar posted on Tue 10/20/09 11:20 PM:
Mr Dick I see a nice picture on your "A Beekeeper's Diary".  
It is a beautiful winter picture of hives consisting of mostly 3 and 4 
brood supers with open wholes in them.  Are those holes for ventilation?
Do you always keep them open?  Do you ever close them?  
Thank you for your time. Pcelar, Western New York.

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