Pistoleer Archive

I noticed Pistoleer's get a special ability modifier for +Dodge+. I have seen dodge from mobs and obviously it allows one to completly evade a ranged attack. I have several questions concerning dodge however. Does it also evade melee attacks? What does +5 or +10 mean regarding dodge (+5 or +10%)? Does everything have a base chance to dodge an attack?

If anyone can shed light on my questions id appreciate your wisdom.