Witcher 2 ff_damage

I am looking through the witcher 2 configuration files that specify which stats Geralt gains upon leveling up. Here is an example for each level gained:

<ability name="Level2" on_added="" on_ended="">
        <vitality mult="false" always_random="false" min="5" max="5"/>
        <ff_damage_min mult="false" always_random="false" min="3" max="3"/>
        <ff_damage_max mult="false" always_random="false" min="5" max="5"/>         
</ability>

Does anyone know what might this ff_damage be? The vitality increases normally by 5 as specified each level. I looked at this and I didn't see an increase in normal damage in character screen so ff_damage must be something else.