CoreProxy.proxy.registerItem(wrenchItem);
mapLocationItem = (new ItemMapLocation()).setUnlocalizedName("mapLocation");
CoreProxy.proxy.registerItem(mapLocationItem);
listItem = (new ItemList()).setUnlocalizedName("list");
CoreProxy.proxy.registerItem(listItem);
Property modifyWorldProp = BuildCraftCore.mainConfiguration.get(Configuration.CATEGORY_GENERAL, "modifyWorld", true);
modifyWorldProp.comment = "set to false if BuildCraft should not generate custom blocks (e.g. oil)";
modifyWorld = modifyWorldProp.getBoolean(true);