Our game of life program has a graphical display now that looks more polished than the terminal output we began with, but graphical output deserves a graphical interface. Something like this,
The interface isn't huge, but you will notice a small row of icons in the upper left corner that can be used to control the execution of the game.
Allows one to load a saved configuration of the universe.
Save the current universe to a file.
Pause the simulation.
Advance one generation.
Simulate continuously.
Edit the universe, i.e. clicking the mouse will toggle the state of the cell beneath the cursor.
Clear the universe.