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Category: Metadata - ONIX - Code List 196

Code List 196 - 21: Text-to-speech hinting provided

Explanation

Code 21 indicates that text-to-speech playback has been optimised through the inclusion of PLS lexicons, SSML or CSS Speech synthesis hints.

These technologies are not supported, or widely supported, so setting this code is rare.

For more information, refer to the Text-to-speech section of the knowledge base.

Examples

Example 1 — PLS lexicons included 
<ProductFormFeature>
   <ProductFormFeatureType>09</ProductFormFeatureType>
   <ProductFormFeatureValue>21</ProductFormFeatureValue>
</ProductFormFeature>

Applies To

EPUB 3 EPUB 2 Audiobooks
Yes Yes Partial *

* Applies to the table of contents and any supplementary HTML resources.

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