>>>>>#DEFINE's are string translations that take place at compile-time not run-time. That is, when PRG's etc. are converted into FXP's or EXE's etc.
>>>>
>>>>Houston,
>>>>
>>>>This isn't correct if the #DEFINE contains a function such as your INLIST() example. These are evaluated at run-time.
>>>
>>>George,
>>>I just entered the following code into VFP6 SP3 running on NT4 SP6.

#DEFINE Sunday 1
>>>#DEFINE Saturday 7
>>>#DEFINE AWeekend   INLIST( iDayOfWeek, Saturday, Sunday )
>>>
>>>CLEAR
>>>dCurrent = DATE()
>>>iDayOfWeek = DOW( dCurrent )
>>>IF (AWeekend) THEN
>>>   ? "Yes it's a weekend."
>>>ELSE
>>>   ? "Not a weekend"
>>>ENDIF

In my Edit, Preferences, I have 'Compile when saved' checked. After compiling the prg and running it for today (Monday), I get "Not a weekend", and then I changed the date to Sunday using my system clock and immediately ran the prg again (without any modifications and/or recompiling) - as expected the message changed to "Yes it's a weekend."
>>>
>>>If the INLIST() is 'evaluated' at compile-time, why does the message change?
>>
>>Hi Houston,
>>
>>Look, that George wrote to you:
>>>>This isn't correct if the #DEFINE contains a function such as your INLIST() example. These are evaluated at run-time.
>>
>>With whom do you argue? :)
>
>Hi Nadya,
>
>With George! Since it was he that stated my example was not correct. Some additional hints: my reply was to George and I started the message with 'George'.
>
>I really hope I have not woke up to a 'Ground Hog Day' experience :-)

Ok, let's try one more time (BTW, lurkers like me benefit from this discussion):

You:
#DEFINE's are string translations that take place at compile-time not run-time. That is, when PRG's etc. are converted into FXP's or EXE's etc.

George:
This isn't correct if the #DEFINE contains a function such as your INLIST() example. These are evaluated at run-time.

Now it's clear, what part of sentence George referred as incorrect statement. In your sample you just confirmed it again. :))

Simple logic thing, nothing more. :)