>>>I'm writing a routine to open a file exclusively. If I find the file is already open, how can I tell whether it is opened exclusively other than by closing it and trying to opening it exclusively, trapping for error?
>>>
>>You may use SYS(2011) function to retrieve lock status:
>>
>Yes it helps. Thank you.
>
>Alex

That's good. What about adding some points to my message? :)