I originally posted this on the Program Announcements board, and I just realised now that there's an AppGameKit showcase board.
I am posting here purely as advertising for those AGK-users who do not generally look at the Program Announcements board. The link to the official Placement Editor Professional thread is http://forum.thegamecreators.com/?m=forum_view&t=193281&b=5
Please go have a look at it. It's worth it.
I'd prefer if you reply only to the official PEP thread, not this one.
It's been suggested that I add screenshots to this thread as well, so here they are: