The `alphabet` subdirectory can contain language specific subset of the ISWA 2010, named with the ISO 639-3 language code.

Example: alphabet-ase.js

Alphabet subsets are derived from the dictionaries of [SignPuddle Online](http://signpuddle.org), recreated daily.  Download from [SignBank](http://signbank.org/signmaker/config/alphabet).

Place the downloaded alphabets in this `alphabet` subdirectory.