In case someone else wants to use clickable pictures in their posts, the syntax is:
[![alt text](image link)](web link)
so either
[![some description](http://www.linkToPicture.jpg)](http://www.LinkToOpen)
or (if the picture is already uploaded to the forum as abc.jpeg):
[![some description](upload://abc.jpeg)](http://www.LinkToOpen)
Note that the forum will turn image links into local links after a few minutes anyway (which is nice)
for example
First way:
Second way: