lang (language)
lang
(language) specifies the human language of the contents of an element.
Language tags are defined by IETF BCP 47, and are in the format <language>[-<script>][-<region>]
, e.g. en
, en-GB
or ru-Cyrl-BY
. Empty values are considered unknown, and values not present in the standard are considered invalid.
References
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