Click the flag to start.
A grid of 121 red dots will be formed, and the instructions will be said.
Click the red dots to add to your coordinates lists, which can be seen on either side: X and Y.
Press space to end a line, and thus starting a new line, that is not connected.
Click the flag (online) or press return (offline) to see the program plot out your coordinates.
Download for 3 extra functions: delete, save, and import!