A new tool for terraformers is available now on xstreetsl.
Demo video available here:
http://www.youtube.com/watch?v=wRlUD0tb9z4
This is a tool for professional terraformers and sim owners as it allows you to "build" your sim layout ingame on a model of your sim and then apply the layout right to your sim at once.
It follows the "What You See Is What You Get" approach and typically delivers WYSIWYG within the constraints of the system.
http://www.koinup.com/Torley/work/50642/
Further Information and demonstration available on request.