For some reason I remember reading somewhere that TitleWriter could also remove some white space and useless information etc. from the files (must be the bup and ifo) saving some disc space.
Now I was skeptical about how much kb could actually be saved and if that would really make a difference. But now that I could actually use it, I can't find the reference anymore.

Did I dream it; is it too little to matter; or is there actually a way to cut a few MB's off?