Place dry ingredients in a bowl. Cut margarine into mixture. Add milk and stir to make dough. Shape into as thin a round as possible, and place in oiled frying pan over campfire coals or on the stovetop. In ten minutes or so (when bottom turns brown, and mixture partly cooked) flip damper with an egg turner. Cook for another few minutes, until both sides are brown and crusty and it is cooked in the center. Alternative: Herbed Damper: Add 4 tsps. dried herbs, such as parsley, sage, thyme, or rosemary, to the flour.