>>Mark,
>>
>>This is not true for big files. Check the FAQ section, I made a reference to the thread, where this problem was discussed in details.
>
>I just downloaded War and Peace which is a 3.2MB text file. I did the following and got no errors and the file remained intact and did it all in 0.6 seconds:

>lcString = filetostr(x)
>lcString = strtran(lcString, 'was', 'Z~Z')
>? strtofile(lcString, x)  && returned 3,271,930 [bytes]

>Resistance is futile. Feel the power of VFP string handling capabilities. I do cede the point that this is CASE SENSITIVE so other alternatives have to be used where string functions have to be performed regardless of case.

Mark,

I mean compare one-line string operation time with 3 lines operation time. Do it in a loop. You'll see the difference. One-line works faster. I made these tests, while we're discussing this problem and my conclusion was that one-line is faster. This is all I intended to say. Check the thread, mentioned in a FAQ, you'll see this discussion.