I can't tell for sure one way or the other, since the site's English translation is a little iffy, and both the English and Japanese sites seem a bit vague on t

I can't tell for sure one way or the other, since the site's English translation is a little iffy, and both the English and Japanese sites seem a bit vague on the matter, but there's a possibility the limitation is actually having four programs open in the editor at the same time, which would be far more convenient.