Did I already play Today?
I had a choice to make here, between making checkAlreadyPlayed a value procedure or having it set a global variable as its side effect, a poor programming practice. In my rush to test, I chose this option to let me disable the procedure call so I could test as I coded.
Also, in retrospect, I could have done this check in Screen1.Initialize, before deciding to load the words file. That could be tweaked later (which means never.)