Technically it's not unpopulated. A logical stores a 0 or 1 (.f. or .t.) an empty value can't exist. I've never tried it, but you may want to try to use NULL for a third value (although that doesn't help your current situation) Sorry I couldn't be more help.

Tom

>Tom,
>So there is no way to select out the unpopulated?
>
>>A logical field in FoxPro defaults to .F. even if it's not "populated".
>>
>>Tom
>>
>>>Hello UT,
>>>
>>>select * from ster where SubStr(sunum,1,1) = "E" .AND. eclrhse == .F.
>>>
>>>returns cursor containing "unknown" or "unmarked" records as well.
>>>(logical not known yet)
>>>How may I return only records containing marked-logical-False?