3 lines of text...

I've been watching some videos of PSO and notice that some speech bubbles are 3 lines long. How do you do that? Is it like a cheat/hack or something?

It's a glitch that occurs when someone uses a font smaller than the one you use, so they can fit more text in their speech bubbles so it wraps to three lines for you.

Is there anyway to type 3 lines of text than normal?... or would you have to rewrite that aspect of the game?

There was an hack around which allowed ya to make huge text ballons. . .
However since such things were massively used for spamming, all ships should share an "anti-hack ballon chat" script.

The huge balloon hack isn't the same as the three lines of text hack. The problem with the text hack is you can FSOD yourself if you try to set shortcuts with it. It's also annoying since people don't want to see huge-ass text bubbles.