WSR supports custom macros through a supplementary application by Microsoft that enables additional natural language commands. As an example of this functionality, an email macro released by Microsoft enables a natural language command where a user can speak "send email to "contact" about "subject"," which opens Microsoft Outlook to compose a new message with the designated contact and subject automatically inserted. Microsoft has also released sample macros for the speech dictionary, for Windows Media Player, for Microsoft PowerPoint, for speech synthesis, to switch between multiple microphones, to customize various aspects of audio device configuration such as volume levels, and for general natural language queries such as "What is the weather forecast?" "What time is it?" and "What's the date?" Responses to these user inquiries are spoken back to the user in the active Microsoft text-to-speech voice installed on the machine.