Okay. (Not sure what DRY is.) I put it in a subroutine because it's used in two places - your very first move (somewhat like Scott Adams/Brian Howarth games) and when you type VERSION (somewhat like Infocom/Inform games). I've just got to remember to update the version number twice - once in the game_information{} block and once in the subroutine.
Incidentally, where is the game_information{} block ever used?