Formal behavior follows the proper forms or customs, and informal behavior feels free to ignore them. The formality of a dinner party is indicated by such formalities as invitations, required dress, and full table settings. Legal formalities, or technicalities, may turn out to be all-important even if they often seem minor. America requires fewer formalities than many other countries (in Germany, for example, you may know someone for years before using his or her first name), but even in relaxed situations Americans may be observing invisible formalities.