A weapon in StarbaseDefs.xml contains this section (the same for all weapon types):
<Stats>
<EffectType>BeamWeapon</EffectType>
<Target>
<TargetType>Starbase</TargetType>
</Target>
<BonusType>Flat</BonusType>
<Value>1</Value>
</Stats>
What is the effect of the Value parameter? I changed it experimentally to 2, but couldn't see any different behaviour. I thought it could be the number of weapons of the same type and hoped by raise it I could make the starbase fire more often per turn, but that isn't the case.