>> 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.