In ships the maps or locations are stored in bookcases. They are niftily
listed in alphabetical order, spanning from one bookcase to the other. The
amount of room available is listed on a level of all bookcases instead of
individual, as in:
Three bookcases lining the walls (144/180)
Bookcase handling when removing or inserting doesn't care what bookcase the
map is in, it just targets the map or location, regardless of which bookcase
it is stored it.

So in order to achieve consistency, make bookcase list to just list the
contents of all bookcases. (The bookcase list # could be left as is incase
someone has built their client functionality against it. )

++lauri