The Speech Synthesis Markup Language (SSML) is a new XML based markup language for handling text-to-speech (TTS) within a VoiceXML application. The new set of SSML elements has made the VoiceXML 1.0 elements dealing with TTS obsolete. This includes <div>, <emp>, <pros> and <sayas> . For a summary of the new SSML elements and attributes, see Speech Synthesis Markup Language (SSML).