When you load Tablet Weaving Draft Designer, it checks what you have set as your primary language on your system and if it can, it will use that language. It currently only supports English and Japanese, defaulting to English if neither of those is your primary. Earlier this year, Riko122 kindly messaged us with the offer to write a Japanese translation of the TDD interface. If anyone else out there would be willing to help with translations into any more languages, we'd love to hear from you!
You don't need to be a programmer to help with this, you just need to be familiar with the equivalent terms for the different TDD labels in the language that you're translating them into. If you message us the translated terms, we'll walk you through adding them to the code.