>The problem is that I have text files (produced as a result of copy to command). I need these files to not have double quotes as Field separators, e.g. remove all " from these text files. These files could be huge (up to 30MB). Therefore I'm searching for the most efficient way to achieve my goal.

Hello, Nadya.

Many years ago I had a simmilar problem (I don't remember well, but maybe it was double quotes, too) and I resorted to a little program in C that stripped the file from such character.

Anyway, I think that VFP has one of the best speed for string manipulation, so I'm not sure that you can make the process quicker than the test we did.

Giving the file size, maybe the memo file approach could be safer. I think there is a given limit to string variables, but if you have one of those 30 Mb files at hand, you can make a test and find out.

Good luck!