Minion Damage: 15% of what?

Other questions that would be answered by showing minion dps on the ingame tooltip but that could also be answered directly by someone from ggg :

1: If your zombies/skeletons are boosted by elemental damage auras (anger or wrath), will "weapon elemental damage" support gem increase their dps ? How about "minion damage" ? Will it increase both their physical and elemental damage ?

2: If your zombies/skeletons are supported by "added fire damage" or "hatred", will "melee physical damage" increase both the physical and elemental portions of their damage.

3: "Melee physical damage" is suppose to increase damage multiplicativelly (more damage = damage is multiplied after all other sources of damage have been added) while minion damage increase damage additionnaly (increase damage = damage is additionned like all other sources of damage. Is it also true for minions ?

Thanks !

"minion damage" increases all damage delt by minions, including thier corpse for MI.
they do not have weapons.
"melee physical" works on minions (that are not ranged), "weapon melee physical" does not. not sure about specters anymore as some use attack skills.
yes "minion damage" is additive, there is no "more" version of it. anything that works on minions and says "more" will happen on thier own calculation step for respective damage.

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Velkor wrote:

How about "minion damage" ? Will it increase both their physical and elemental damage ?

I would like to know this one too
Specifically for spectres that cast spells