put in the URL for a specific image in your post surrounded by the image tags which automatically can be added with the image button in the post reply field.
if you find a picture on the web and wanna post it, right-click on the picture (if its on a site and is unclickable), then select "open in new tab", then copy the URL from that and paste it into your post, then highlight the link and click on the image box. your image should work if you did it right and the image allows hotlinking.
