Crossword is a tool to build grids for crossword puzzles. Characters are represented by empty cells; depending on the style the space is either a filled or empty square. Typing the sought after words separated by spaces builds the grid. The typeface does not insert the numbers automatically so they have to be typed manually prior to the word. Up to tree digit long indexes (0-999) are possible. To get a correct grid the leading should equal the type size and hyphenation or optical corrections should be turned off. You need a layout engine that can handle OpenType features to make full use of the fonts!