Which SSML Features?

[DLu!!]

Is there a document that says which SSML features Cepstral supports? (besides the examples listed here: http://www.cepstral.com/en/tutorials/view/ssml)

In particular, I'm having a hard time trying to get duration to work, and I'm trying to figure out if its my mistake or the system.

[alasswell_support]

The prosody tag for "duration" is not supported. You may wish to try using the "rate" tag to alter the rate of speech.
For example:
The price of the meal was <prosody rate="-20%">$45</prosody>

http://www.cepstral.com/en/tutorials/view/ssml

This contains more information on SSML. If you have further questions about any specific SSML usage, feel free to post them here, and we'll do our best to help.

[DLu!!]

Thanks!