Deleting message from messagin app

[Jon_1051]

Hello everyone. Just had a question about the messaging app for windows 8. I decided to give a try and messaged a facebook contact. My first question is why did the message send twice and how do I delete messages. I don't want a complete history of everyone I have messaged and every message sent. I've looked everywhere online and figured this would be the best place to get an answer. Thanks.

 

[Huime]

long tab and delete?