Love the program!
To improve on a good thing, please add more flexibility and personalization when printing puzzles from the program.
Especially helpful would be a header or a footer or some line which the user could add that would print out on the sheet with the printed puzzle.
For example, I would like to be able to identify the source of a dubbed puzzle, or some other way of identifying a given puzzle -- like "Starter's Medium #2" or something else that would be useful for me.
Another helpful printing feature would be to be able to print a blank grid for me to fill in manually.
Or is this somehow already built in but not yet found by me?
