The font Azio chose doesn't look as nice as the rest of the keyboard; it's not particularly clean or sharp, so some of the keys are difficult to read. The legends on the previous version of the RC ...

Now open notepad, and type something using the keyboard to figure out how everything will work. If all you want is to install Burmese Font aka Zawgyi Font on Windows 10, you can do so from rfa.org.