Question:
In Terramodel, how do I view and execute previous commands?
Answer:
Scroll through commands

If you have a clear command line, you may use the up and down arrows on your keyboard and scroll through the commands you recently issued.  This can be useful if something goes wrong, you can see what commands were executed.  Or you may want it to run a previous command.

Also, if you hit ENTER or the SPACEBAR when the command line is clear, the previous command will be executed.  (Repeating the last command.)

Also, if you have a clear command line, you can place the mouse in the graphics area and right-click.  The previous commands will be available to run.