Where info about mechanics?

First Question : why is where Chill Duration in basic Bow Shot Skill?



Second Question : where i can find info about how many my poisonburst arrow deal damage by poison? or i should calculate it by myself?

Third Question : where i can find info about that poison duration is decrease by 30% by comorbidity or i should just remember it by myself and do that math about all more or less duration in my head?