Superseded tags, accepted on decode only. They sit in IANA's
"Specification Required" range (300–311) and were replaced by the
first-come-first-served 40300+ tags above; existing data still uses them.
Never emit these for new data. Frozen, like every entry in it.
Superseded tags, accepted on decode only. They sit in IANA's "Specification Required" range (300–311) and were replaced by the first-come-first-served 40300+ tags above; existing data still uses them. Never emit these for new data. Frozen, like every entry in it.