[Rules] 8.4 Elevation makes no sense to me

[plloyd1010]

You may have found a technical hole in the rules. It is strongly implied, but specifically stated, that the off-board artillery factors may attack only one hex in a given activation. I checked rules 3.14, 7.33, & 9.4. We've always played with one artillery strike constituting the activation, not up to 3 off-board artillery activating and attacking different hexes.