In due course, we should install the relevant ISO 2- and 3-lettercodes as the enumerated possible values . . .
Source
<complexType name="TextContentWithOriginType"><simpleContent><extension base="womlcore:longLocalizedStringType"><attribute name="origin" default="manual"><simpleType><restriction base="string"><enumeration value="machine-generated"><annotation><documentation>The text value given is generated automatically using a computer program</documentation></annotation></enumeration><enumeration value="manual"><annotation><documentation>The text value has been manually written or edited by a human editor</documentation></annotation></enumeration></restriction></simpleType></attribute></extension></simpleContent></complexType>
<attribute name="origin" default="manual"><simpleType><restriction base="string"><enumeration value="machine-generated"><annotation><documentation>The text value given is generated automatically using a computer program</documentation></annotation></enumeration><enumeration value="manual"><annotation><documentation>The text value has been manually written or edited by a human editor</documentation></annotation></enumeration></restriction></simpleType></attribute>