>>It is not useless because without it every memo field will be updated regardless of whether "@field" is present or not. This will unecessarily bloat the .fpt file. So the FOR clause will speed it all up and keep the .fpt file size to a minimum.
>
>That command will only do one replace and that is on the current record. Unless you would have put ALL keyword, then, yes, it would have been usefull.

If you use the FOR clause then ALL clause is not needed. FOR does an implicit ALL in all scope statements.