Works as described, easily readable letters and intuitive interface.
Couple of minor glitches though. You can`t remove letters. Eg if you enter the wrong letter in a square you can`t clear the square again, but you can replace it with another letter. No, entering space doesn`t work either.
The clue popup window gets annoying when moving around the board.

Works like a charm. Beware there is a slightly newer version on this site. Why is that anyway??

Of Course