It's not on the page, but for anyone curious; 15 Dex gives you -1 AC, 16 is -2, 17 is -3, 18-20 is -4, 21-23 is -5, and 24-25 is -6. Dexterity also boosts THAC0 for Nordam--at 16 it's -1, at 17-18 it's -2, and at 19 it's -3. Pretty sure it boosts damage too, but I don't know the actual amounts.
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