Specifies a reference to a lexicon document.
Refer to SSML 1.1 for further information.
Specifies a reference to a lexicon document.
Refer to SSML 1.1 for further information.
<head>
    …
    <ssml:lexicon xml:id="pls_1" uri="lexicon.pls" type="application/pls+xml" />
    …
</head>
    This element is empty
http://www.w3.org/2001/10/synthesis