Press period key, then type this:

we have a winner Gold : Win the game (Gold Medal) 
we have a winner Silver : Win the game (Silver Medal) 
we have a winner Bronze : Win the game (Bronze Medal) 
we have a winner : Win the game 
all is lost : Lose the game 
big dog : Give your player $10 million 
fat cat : Give your player $1 million 
bailout : Give your company $10 million 
subsidy : Give your company $1 million 
passport : Give your company access to all territories 
go go go : All trains go double speed 
oops : All trains crash 
trains are in my blood : All locomotive types available for purchase 
double shift : Buildings produce cargo at double normal rates 
safety first : Trains never crash 
upgrade : All trains upgraded to HST 125 (A nice diesel)