Where can I find the Syn keycodes?

Some FuncUnit docs pages refer to syn pages that are missing. This page is an example: https://funcunit.com/docs/FuncUnit.prototype.type.html. Where are the syn docs, specifically the keycodes?

I found the list in the src: https://github.com/bitovi/syn/blob/master/src/key.js#L147.

Is there a docs page for syn or is that still needed?