0.9,th-th -

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

: Often written as q=0.9 , this is a Relative Quality Factor . It ranks user preferences on a scale from 0.0 to 1.0. A value of 0.9 indicates it is a secondary preference if a primary language (defaulting to q=1.0 ) is unavailable. 2. Practical Application: How Servers Use It 0.9,th-TH

: This identifies the language as Thai ( th ) and the region as ( TH ). : If neither is found, the server provides

The string breaks down into two distinct parts defined by the HTTP/1.1 specification : : If neither is found

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