0.9,th-th May 2026

: If English isn't available, it serves the Thai version because it has the next highest weight ( q=0.9 ).

: The server looks for a version in US English ( q=1.0 by default).

: If neither is found, the server provides its own default language. 3. Contextual Variance 0.9,th-TH

: Used by clients to request specific data formats or localized error messages from RESTful APIs. Summary Table: Component Meanings th Language Code ISO 639-1 code for Thai TH Region Code ISO 3166-1 alpha-2 code for Thailand 0.9 90% weight ; high priority but not the absolute first choice

This string is a specific component used in , specifically within the Accept-Language header. It communicates a user's preference for Thai (Thailand) with a weighted "quality" (q-factor) of 0.9 . 1. Technical Decomposition : If English isn't available, it serves the

While primarily used in HTTP, this syntax appears in other technical environments:

The string breaks down into two distinct parts defined by the HTTP/1.1 specification : It communicates a user's preference for Thai (Thailand)

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