Any apps which have Strings in which are prefixed with /*LANG*/ will be scanned, and if the language is set in the app loader the string will be replaced with a translation from the JSON in this directory.

See https://www.espruino.com/Bangle.js+Locale#app-translations for more information.

JSON in unicode-based contains characters that can't be rendered by the default font in Bangle.js. The language_render.js tool (below) renders the text to bitmaps and then writes them into the corresponding JSON file in this directory, so that the bitmaps (rather than just text) are included in apps instead.

Check out https://github.com/espruino/EspruinoAppLoaderCore/tree/master/tools (available in core/tools in this repo)

• ../core/tools/language_scan.js - scan for unhandled /*LANG*/ strings and automatically translate them
• ../core/tools/language_render.js - renders the JSON translations in the unicode-based folder to bitmaps, and writes them into the corresponding JSON file in this directory (see above)