no, I was quoting your example up above, where you said it would 'heal' that many points to the hull, rather than damage it if the total damage value was less. By simply putting a multiplicative 1.0 and then putting a -10 to the additive, you can have a 'repair' beam if the damage of the weapon, is, say, 5 or so so, where it healed 5 hit points everytime it hit.
Quite useful for creating entirely new mission concepts,if I do say so myself. For once, Alpha 1 can actually fly an effective support ship - if that isn't enough, think of the possibilities for multi. You could have assault missions with one guy flying repair, protecting bombers against whatever damage the other team could through at 'em. It would introduce a true factor of teamwork in a sense.