[Fyron]

"Percentage based leaky" armor means using the DamageTypes.txt file to give penetration percentages for (all) weapons vs. armor components. Directional armor refers to ditching regular armor, and using high hp/kt components in outer hull slots (possibly ditching inner hull slots as well, to avoid the magic wall layer effect). Refer to Gritty Galaxy mod for directional armor.

All of the various abilities used by special effect armors in stock are defined in the modding doc. For example, Emissive Armor uses:

Component - Damage Resistance
This ability provides a damage resistance amount for a component. Any damage that is done to the component has this amount subtracted before it is applied.