Also, if you are a regular BattleTech player (Total Warfare, Tactical Operations, and so on), note that AToW was written with role-players in mind, and thus shows character improvement in the form of increasing levels, rather than decreasing target numbers.
What this means, simply, is that whatever Skill modifiers you might find in the tabletop war game are inverted in AToW, because AToW applies modifiers to the roll, and not the target number.
(In practice, this means the results should be exactly the same.)
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