Reported by jteh on 2013-03-25 04:41
In the espeak synth driver, for character mode, we use . This actually does nothing with eSpeak and seems to be Microsoft specific. We should be using or perhaps which eSpeak documents as supported. Of course, we should check whether this has undesirable effects first.

References:

• For interpret-as="characters": http://www.w3.org/TR/ssml-sayas/
• For interpret-as="tts:char": http://lists.freedesktop.org/archives/accessibility/2006-March/000078.html