Portuguese-Brazilian Orthographic Convention of 1945 (Convenção Ortográfica Luso-Brasileira de 1945)
Portuguese orthography conventions established in 1945, generally in effect until 2009. This reform was not ratified in Brazil.
Used in BCP47 recommendation, to indicate which subtags are valid for a certain variant
prefix
Variant Taxonomy
Used in BCP47 recommendation for the subtag of a language, script, region or variant
IANA subtag
Named individual
Variant