Gets the charset from CGI parameters. (Based on RFC2616)
* Returns: the charset (HTTP_ACCEPT_CHARSET > "UTF-8").
Gets required locales from CGI parameters. (Based on RFC2616)
Returns: An Array of Locale::Tag‘s subclasses
(QUERY_STRING "lang" > COOKIE "lang" > HTTP_ACCEPT_LANGUAGE > "en")
Sets a CGI object.
[Validate]