Message Type vs. Every Message in Apple Mail rule

I was wondering how exactly to configure the SpamSieve rule in Apple Mail. The manual says:

Change the From menu to say Message Type (or Every Message if you have Mac OS X 10.3 or 10.4)

What about Mac OS X 10.5? It has both the Message Type and Every Message options. Which one should I choose? (If it doesn’t matter, I suggest the manual explicitly say so.)

What the manual is trying to say is that you should choose Message Type, except on 10.3 and 10.4 which only have the Every Message option.

Okay, that makes sense. It would be nice if the manual were more explicit in its explanation.

Done.