Thread:The Mysteryous user/@comment-31469090-20140825201101/@comment-31469090-20140825202801

Here is how to run it. On the side, there are many buttons and levers. The most important one to start off with is help, which tells what all the other buttons do.

To alter the terrain, type H(whatever rectangle you want to Alter, from 1 to 19) = (whatever you want the height to be)