If your app needs several instances of a face with the same properties and actors, for example, the tiles for a board game or the buttons of a calculator, you can define that as a style with a name and use that name instead. This is illustrated in the following tile game (in 10 lines!) from Nick Antoniacci:
;-- see Chapter09/tile.red:view [ title "Tile Game" backdrop silver style tl: button 100x100 [ temp: face/offset face/offset: empty/offset empty/offset: temp ] tl "8" tl "7" tl "6" return tl "5" tl "4" tl "3" return tl "2" tl "1" empty: base silver]
We defined a style tl for all eight buttons we need. Clicking on a tile button moves that button to the empty space, empty, by setting its offset to the offset of empty. Then
