The backward compatibility.

>I will investigate this. I was not aware of it but why would one ever want this setting off / .F. ?
>
>>You can try to set Grid property Optimize=.T.
>>
>>>Surely an old question :) ...
>>>
>>>I have a file of about 500,000 records - file is about 40Mg in size.
>>>Records belong to 1 of 5 possible groups identified by a 20 char string field.
>>>There are about an equal number of records per group i.e. +/-100,000 per group.
>>>I want to allow the user to see only one chosen group of records at a time in a scrollable grid which has 3 colums.
>>>
>>>What is the fastest way to accomplish this? SET FILTER seems sluggish but perhaps I am not using it in the right way.
>>>
>>>TIA