West of House
This is an open field west of a white house, with a boarded front door.
There is a small mailbox here.
A rubber mat saying 'Welcome to Zork!' lies by the door.
> save
Saving.
*ERROR*
"UNBOUND-VARIABLE"
"GVAL"
THIEF-ENGROSSED!-FLAG
LISTENING-AT-LEVEL 2 PROCESS 1 INT-LEVEL 100000
Atom REP has neither LVAL nor GVAL
Guess, the thief-flag needs an initial value.