>Thanks Fabio. I'll check it out. Still wondering about the "why" though.

I think VFP virtual machine it recognizes the extension of one string,

string = string + stringextension

therefore, calculates
- stringextension

and after append stringextension to the string ( this can to be done a lot efficiently )

For
string = stringextension1 + string + stringextension
don't use known information, and calculates:
stringextension1 + string + stringextension
and then store result on the heap.

>Merry Christmas!


Thanks Jos.

Merry Christmas! to you too.