SC2 Data Editor — Effects, Weapons, Upgrades, and the damage chain in XML. Use when creating or modifying CEffect* (damage, search, apply behavior, launch missile, set), CWeapon, CUpgrade, or the full chain from weapon through to damage application. Also covers TargetFind, TargetSort, and Footprints. Always consult the catalogsData.xsd schema for exact fields and structure — do not assume unsupported fields exist. Do not use for actors/visuals (sc2data-actors-visuals) or unit/ability containers (sc2data-units-abilities).