This isn't a fancy multi-hundred line script that does a lot of complicated things. It does one thing, and that is formatting oversize lines of text so they fit inside your message box without any fuss. You do not need to use special message codes and the script shows respect to your data when you manually hit enter in the text box for a new line. There is only one configuration option and it lets you fix text drawing bugs if your custom font likes to overrun the text box. The benefit of adding that minor piece of nuisance is an assurance that the entire drawable width will be used at all times, something that I noticed is problematic in another script when you use the default font settings.
Example screenshot:
Spoiler
Download link: (scroll down and copy from the RAW paste box. Also in attachments.)