Tips for sounds

Here some additional regarding sound.
<ul>
<li>there is no need to put many spaces between words in the text nodes in order to slow down the voice</li>
<li>however, it is useful to add pauses at the end of a sentence in inserting three dots (example : "The plane is moving... Now the planes stops..."
<li>if the sound is cut at the end of a sentence during execution in a browser, simply add the following characters at the end of the sentence : <vtml_pause time="1000"/> (example: "The plane is moving... Now the planes stops...vtml_pause time="1000"/>"</li>
</ul>