The language of the input text for the request: English or French. Regional variants are treated as their parent language; for example, en-US is interpreted as en. The input content must match the specified language. Do not submit content that contains both languages. You can use different languages for Content-Language and Accept-Language. * 2017-09-21: Accepts en or fr. * 2016-05-19: Accepts only en.
The language of the input text for the request: English or French. Regional variants are treated as their parent language; for example,
en-USis interpreted asen. The input content must match the specified language. Do not submit content that contains both languages. You can use different languages for Content-Language and Accept-Language. *2017-09-21: Acceptsenorfr. *2016-05-19: Accepts onlyen.