Poison realted question

my Question is

(1) increase damage with poison increase damage over time ?

(2) however Increase attack damage will not affected to damage with poison or DOT. so increase attack damage with claw can increase damage with poison as well as DOT..?

(3) Vile Toxins Support with each poison increase main damage and after increasing main damage that result as more DOT..?


(4) if i m dealing 1000 Damage and gives 20% = 200 over time with poison,
now what calculation for ( 1) 10% increased more damage over time ( 2) +10% to damage over time multiplier ?

1. 10% increase to poison means 1100 poison dmg so 20% of that is 220 dmg

2. attack damage affects the skill. poison is applied from the base hit (im 95% sure its before any modifiers) so if you have 200% more attack damage with claws i dont think it matters in amplifying the poison dot.

3. vile toxins im pretty sure reads deal 5% more dmg (or increased dmg) per poison stack. so it either buffs all dmg by that number. or im wrong in the wording and it only buffs poisons. so if you have 2 stacks of poison dealing a total of 1000 dmg, it would gain 10% dealing 1100 dmg in total. 4 stacks for 2000 would instead deal 2400 dmg and so on.