@Nille-Horgen Hi Nille, here's Jake's post about adding images: http://forum.svslearn.com/topic/16/here-s-how-you-post-images (basically you just put your link inside of the square brackets: !{}
OR - there's a little 'link' icon above the compose area. If you type your text, highlight what you want to be a link and click that icon, you can then add the link and it'll do the bracket coding thing for you.