set "$string3" to "WOOO\n\n\n\n\n\n\nWOOOOOOOOOOOOOOOOOO\nWOOOOOOO\nOMMMMMMMMGGGGGGGG" [ "&$string3&"
Ideally, newlines would cause the message box to act as if the string ended there, while treating the rest of the string as if it were the next string.
This will be looked at whenever the message box code gets overhauled.