Section 4(a) - Top of Stairs
The description of Top of Stairs is "The stairs end here at a rickety door labeled '1428 - Attic Loft' leading eastward." Top of Stairs is climeable.
The attic door is an openable locked door. It is east of Top of Stairs and west of Attic Flat. The description of the attic door is "[if the attic door is closed]While closed, it seems barely able to stand up - it looks as if it were knocked in and then placed back at some point in the recent past.[otherwise]It is barely hanging off its hinges." The iron key unlocks the attic door.
Instead of attacking the attic door:
if the attic door is locked:
now the attic door is unlocked;
now the attic door is open;
say "With a screech of breaking wood, the door kicks in easily enough.";
say "What would be the point?"