When a text file containing ascii, japanese and chinese characters is opened, the japanese and chinese characters are overlapped. If I change to a chinese or japanese font, these characters display properly. But then ascii characters become separated with spaces.
The way SuperEdi works, all characters must have the same width. Therefore, when you use a latin script, there will be not enough room for wide chinese characters. If you use a chinese script, there is too much room for latin characters.