Fun: They picked a new die der das prompt at the end of which lesson?

Anybody know the answer to my trivia question? After answering gustvalo's question my ears were ringing. http://members.rocketlanguages.com/your-community/german-grammar/written-section His questions forced me to listen to one of the earlier lessons before they changed the prompt. I forgot how unpleasant that prompt was and I'm so glad they fixed it. I wish the audio engineers could go back through and replace those. Doesn't anybody know how people sign quick emails in German? In French we do A+ (and we say, "a plus") In English we do Thx (and we say, "later") Something like that for German. Anyone?

Keine Ahnung, but read a response to my on line search that says Herzliche Grüße is commonly used to sign off business emails.