Create terrain

Hello,

I am working in Inroads Selectseries 4, and I want to create a simple terrain. I have no file to load. I just want a flat terrain without slopes, but in the tutorials there is always a file to import. I am recently working with the software for a small assignment at my University. Hopefully someone can help me with this.

Thank you in advance,

Vincent Jongman
University of Twente