dave (12/08/82)
I ran into an apparent bug in how monsters are displayed. I was two squares away from a L in a dark room. I zapped it with a wand which turned out to be a teleport-away. But the L still showed! I threw and arrow at it, and it was no longer there, and when I approached it was gone. (I ran into the L in a corridor later.) There's a bug in the code that deals with showing you the locations of monsters that you have already found in a room.