>>> The line was:
>>>m.find_drop = IIF(_DOS,0,2)
>>>
>>>I understand the IFF() function, but don't know
>>>what value "_DOS" returns (I imagine it's .T. or
>>>.F.)
>>
>>_DOS is not a function it is a system var
>>like _Tally, _PLength etc.
>>it is true if the dos version of 2.6 is uses (if
>i
>>remember right)
>Absolutely correct.
>There are four similar system variables to test
>for the version of FOXPRO that is running:
>_DOS
>_WINDOWS
>_MAC
>_UNIX
>
>Personally, I've never used the last two.

Ok, I see. I guess that was somewhat obvious... Thanks to: Michael and Arnon for their QUICK replies!