The Yahoo News Search service provides online searching of news stories from around the world. The application ID. See Application IDs for more information. `All query terms.` `Any query terms.` `Query terms as a phrase.` `` `` The format for the output. If json is requested, the results will be returned in JSON format. If php is requested, the results will be returned in Serialized PHP format. `` `` `` The name of the callback function to wrap around the JSON data. The following characters are allowed: A-Z a-z 0-9 . [] and _. If output=json has not been requested, this parameter has no effect. More information on the callback can be found in the Yahoo! Developer Network JSON Documentation.