AFAIR I got the idea out of one of Aleksey T.'s responses - might have misunderstood,
saw no need to verify or even check before. Was just sure I could bump enough
for the mentioned scenarios.

>AFAIK, it's not the case. Before VFP9 IN () was even internally converted into INLIST().
>
>>IIRC In () gets expanded into a cursor in vfp already,
>>so I surmise that SQL server and others in this league implement it such as well.
>>Under this assumption, the In() way of coding is probably the easiest and most
>>portable way to code for things like a filter with a user-defined ad-hoc list of items.
>>