alloy.common

ISO 3166-1 Alpha-2 country code Full list in https://www.iso.org/obp/ui/#search/code/ example: "AF", "US"

Email address as defined in https://www.rfc-editor.org/rfc/rfc2821 and https://www.rfc-editor.org/rfc/rfc2822 A more human-readable format is available here: https://www.rfc-editor.org/rfc/rfc3696#section-3

A hex triplet representing a RGB color code example: "#09C" (short) or "#0099CC" (full)

ISO 639-1 Alpha-2 language code or Language for short. Column ISO 639-1 in https://www.loc.gov/standards/iso639-2/php/English_list.php example: "fr", "en"

BCP 47 Language Tag IETF RFC: https://tools.ietf.org/search/bcp47 example: "fr-CA", "en-US"