REGISTRY(Effects, BITS(8))
#define Effects_from(i) _Effects_from(i, EFFECT_Null)
REGISTER_REGISTRY(RegisterEffects)
+REGISTRY_CHECK(Effects)
#define EFFECT(istrail, name, realname) \
REGISTER(RegisterEffects, EFFECT, Effects, name, m_id, Create_Effect_Entity(realname, istrail));