What does the Parry Skill Do?

[Zylithan]

when you say added, you dont mean straight up added, do you?

like, if the unit has armor making prot 15, and a shield for prot 15.

if the hit is above def, but below def+parry, is the effective prot 30, or something between 15 and 30?

i remember hearing that prot of different armors didnt add "nicely"