I see.It is real true that we need document in English.
One thing I want to know is how manage English comment and Japanese comment (and other language...) in my source code.
We can output comment to xml file but this has one problem.
We output xml file in English and create xml file written by Japanese from generated English xml file.
If I add some method to source,output xml file in English,I must add method to xml file written in Japanese.
I don't know it is standard way to manage comment in multi language.
If someone know better way to manage multi language comment,please show me how to manage it.