[Killermoose]

I vouch for what hairyyahoo says! Although their are a few variations on the English language all over the world, I think its likely to be more different in places like Yorkshire or Liverpool in England than it is in America!

"up to two terminators may replace their storm bolters with either an assault cannon at +20 points or heavy flamer at +10 points or add a Cyclone missile launcher to their existing weaponry for +25 points"

See, what I get here is that the reason they use 'or add a Cyclone missile launcher' is because it isn't replacing anything, unlike the Assault Cannon or H.Flamer. All you need to do to sort this out is put ' they may' after the ' or ' and its makes it perfectly clear. Like this:

"Up to two terminators may replace their storm bolters with either an assault cannon at +20 points or heavy flamer at +10 points or they may add a Cyclone missile launcher to their existing weaponry for +25 points"

Now why can't GW have put that there to begin with? I wonder...