On referring to the Thai people, issued 2 August 1939, reinforced Mandate 1 by forcing the public to stop using group names like 'Northern Thais', 'Southern Thais' or 'Muslim Thais':
"Cease referring to Thai people inconsistently with the name of the nationality, or according to the preference of the group."
"Use the name 'Thai' to refer to all Thai people, without subdividing them."[3]