int index = 1;
	luaL_checktype(L, index, LUA_TTABLE);

	StructureDefManager *smgr = getServer(L)->getEmergeManager()->structdef;
	if (!smgr) {
		verbosestream << "register_structure: StructureDefManager not active" << std::endl;
		return 0;
	}

	StructureSection *s = new StructureSection;

	s->name = getstringfield_default(L, index, "name", "");
	s->structure_name = getstringfield_default(L, index, "structure_name", "");
	lua_getfield(L, index, "volume");
	s->volume.X = getintfield_default(L, index, "x", 0);
	s->volume.Y = getintfield_default(L, index, "y", 0);
	s->volume.Z = getintfield_default(L, index, "z", 0);
	lua_pop(L, 1);
	verbosestream << "register_section: " << s->name << std::endl;
	smgr->registerSection(s);