David Nebenzahl wrote:

So what difference would that make? Once the
film is wet, why would you need wetting agent?


The instructions could read; " Pre-wet or not as
you damn well please." That being the case anyhow.
Perhaps it's a left-over selling point which used to
read, "no pre-wetting required".
There are some left overs and some that should
have been left over. Dan