Changes save automatically as you type, and show on the board straight away.

Copy for Blackboard copies the whole game, with your current text, so you can paste it straight into a Blackboard HTML block (select everything in the block first, then paste). Download for Blackboard saves the same thing as a file, for uploading or running without Wi-Fi.

Words in curly brackets, such as {H}, are filled in by the game. Leave them in place.

The browser would not download the file. Copy everything below into a plain text editor and save it with a name ending in .html.