>>Hi Derek
>>
>>IF NOT USED("tablealias")
>>
>>>Hi,
>>>I want to check a table whether it is open or not before
>>>open it, how to check it ?
>>>
>>>Please advise.
>>>
>>>Derek
>
>Won't tell you if it's been used under a different alias. AUSED() will, if you have the full path to the table.

I've noticed one can never been too sure of the intent of the questioner. He could simply be asking the question I answered.