Word data files

1. You may use every character you want to, including even national characters, blanks, dashes, etc. It's up to you to make sure that the words actually make sense
2. The word length should always be odd,that is, 3,5,7, ..., 25 (except for two letter words). This limitation is needed to improved the structure of the crossword. You're alolowed to use words with even length, but this will probably cause larger gaps in the crossword grid.
3. Word length must be at least 2 characters, and no more than 25 characters.
4. The word data file must not contain empty lines.
5. The last entry may or may not be `***END***', without the quotation marks, of course. The ``***END***'' is not needed, but will be ignored if present.