I know how it's done. It's stupidly easy to do, too. The only problem is, revealing how to do it publically could also open the door to widespread cheating.
Also, when you enable chat, the game doesn't let you see what you're typing as you type it. You can only see it after hitting Enter. At least, that's what I found to be the case in my limited messing around in Evolution. Maybe there's a way to get typed text to appear that I didn't discover yet.
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