Press [F2] in the game and type in

 funspeedup

 You know see a pair of running legs on the top left part of the screen, that indicates
 that the speed mode is ON. To stop the speed mode simply pause and unpause the game.

 Other codes:

 FUNEXPLORATION      Full map
 FUNFRIEDA           Bigger item words
 FUNFILLUP           5 of everything in each storage facility