Looking at the rules for various monsters, in the german prd (prd.5footstep.de) some monsters have a property called "Angriffsfläche". After looking at english entries for monsters, I am confused about what this actually is. The rules say that it is "the space a monster attacks" in german, not much more (that I could find at least) which would match the german name pretty good. But in english, it is only called "space" and leads me to believe that it is simply the space the creature occupies.
Is it one of those two things? Or something completely different?