Bogus strings with Pal-Patcher? (Megalex this is for you)

[weezee]

I've reimaged Ray Blade JAP with DJ for a friend.
I have a PAL DC+RGB Cable, and this game works with no problem, but just for curiosity, I've scanned it with Pal-patcher 1.1,
which has found a 50 Hz code.
What does it mean? The game has no black borders and no problems booting. I've scanned only the 1st_read.bin.
Is it possible that Pal-patcher finds strings that are actually not what they seem?
I have activated only the following slots:
50 -> 60 Hz
PAL Protection 1
PAL Protection 2
Process only 1st read file

I'd like to know this, in case it happens in the future (I've used Pal-patcher many times on really protected games, but this is the first time I find a code for an already working game).

WeeZee