> For the complete documentation index, see [llms.txt](https://api-docs.speechace.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://api-docs.speechace.com/reference-data.md).

# Reference Data

- [Phonetic notation](https://api-docs.speechace.com/reference-data/phonetic-notation.md)
- [US English (en-us)](https://api-docs.speechace.com/reference-data/phonetic-notation/us-english-en-us.md)
- [UK English (en-gb)](https://api-docs.speechace.com/reference-data/phonetic-notation/uk-english-en-gb.md)
- [French (fr-fr, fr-ca)](https://api-docs.speechace.com/reference-data/phonetic-notation/french-fr-fr-fr-ca.md)
- [Spanish (es-es, es-mx)](https://api-docs.speechace.com/reference-data/phonetic-notation/spanish-es-es-es-mx.md)
- [Markup Language](https://api-docs.speechace.com/reference-data/markup-language.md)
- [Phoneme to letter mapping](https://api-docs.speechace.com/reference-data/phoneme-to-letter-mapping.md)