Type a string (all in lowercase) and press enter. It should reverse it and type out both strings.
I don't remember whose text engine it is. If it's yours, tell me and I'll give credit. -•-•-•-•-•-•-•-•-•-•-•-•-•-•-•-•-•-•-•-•-•-•-•-•-•-•-•-•-•-•-•-•-•-•-•- Update 4/09/16: ...retal raey enO +Transitional spins instituted +Minor glitches fixed Update 4/10/15: +New Intro added +Sounds +Warning