The document discusses goiter classification and goiter control. It classifies goiter into three grades - Grade 0 (impalpable, invisible), Grade I (palpable but not visible), and Grade II (palpable and visible). Goiter control includes four essential components: iodized salt, iodine monitoring, manpower training, and mass communication. Iodized salt is the primary intervention, with salt iodized to contain at least 15 ppm iodine at the consumer level. Iodine monitoring through laboratory testing is also important to track iodine levels in the environment, food, and people. All personnel involved must be properly trained, and mass communication can help create public awareness about goiter