"ENTER DEN" doesn't work from the Foyer

[eriktorbjorn]

>LOOK
Foyer
This bright, airy hallway runs northwards from the living room to the apartment
door. Tall, arched entrances lead east and west, and the bath is down a few
steps to the southwest.

>ENTER DEN
Guest Room
This is a sunny, cozy bedroom, barren of furniture. The only way out is to the
west.

That's because DEN-OBJECT-F walks you east, not west:

     <COND (<VERB? WALK-TO THROUGH>
        <COND (<EQUAL? ,HERE ,FOYER>
               <DO-WALK ,P?EAST>)
              (<GLOBAL-IN? ,DEN-OBJECT ,HERE>
               <TELL ,LOOK-AROUND CR>)>)