Interpretation directive. Rendered as <say-as interpret-as="...">.
<say-as interpret-as="...">
The text to interpret.
Optional format attribute (used with "date", e.g. "dmy").
"date"
"dmy"
The SSML interpretation type (e.g. "cardinal", "ordinal", "date", "telephone", "characters").
"cardinal"
"ordinal"
"telephone"
"characters"