In 1917, Rama VI declared a new law, the "Form of Address for Woman Act, 1917". The act mandated a new form of address, "Nangsao" (นางสาว) ('Miss') for women who were unmarried (the wording used in the act was "woman who has no husband") and "Nang" (นาง) ('Missus' [Mrs.]) for women who were married ('married woman or woman who has husband'). Once a woman married, she had to use the address "Nang" before her given name for the rest of her life even if she divorced or widowed. This form of address applied to commoners, not to women in royal or noble families.