0.9,th-th -
While primarily used in HTTP, this syntax appears in other technical environments:
When a web browser sends a request, it might include a header like: Accept-Language: en-US, th-TH;q=0.9 0.9,th-TH
: 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 While primarily used in HTTP, this syntax appears
: 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
: Developers use these strings to match user OS settings with available translation files.
: The server looks for a version in US English ( q=1.0 by default).
