IANA subtag
comment: Used in BCP47 recommendation for the subtag of a language, script, region or variant

Script
type: Class

Named individual
type: Class

Script Taxonomy
type: Named individual
type: ConceptScheme
has top concept: Code for undetermined script

Code for undetermined script
IANA subtag: Zyyy
top concept of: Script Taxonomy
issued: 2005-10-16
in scheme: Script Taxonomy
type: Script
type: Named individual
type: Concept