I've just arrived at Restenford (v.2, under TuTu). After reading Pelltars final instructions I went on exploring and stuck at the first building door I try
Namely it was S-E-most building, surprisingly similar to lighthouse 
Exact problem is that while most of the doors in BG widely swing open when used, this particular door gives only tiny slit when I try to open it. So, opened position of the door almost exactly same as closed position, making it impossible to get an "enter door" cursor when moving it over would-be doorway. Instead I just get all the same "open/close door" cursor. Very small part of doorway, which is become visible when door is opened, seemingly didn't have any transition triggers attached, as cursor didn't change when over it at all.
May be it's just meant to be unaccessible, but why one would make locked, openable door to unaccessible building?
