Another small note on DisplayLevel, which was apparently defined in 2002
on the mailing list, but never really documented:
An implementation of DisplayLevel should count up from the finest
grained level of the current key. This wasn't quite clear from Troy's
definition, since, whether you count
My apologies for the usual typos, but some in this last email made
things unclear.
> ... While I still have no idea who added these, DisplayLevel is a very
> useful property for general books.
DisplayLevel=2 was removed from general books which were not indexed
down to a verse, line, or other
DisplayLevel=2 seemed to have been added to EVERY general book, a while
ago. While I still have no idea who added these, DisplayLevel is a very
useful property for general books.
The usage for DisplayLevel=2 is when a general book is so finely indexed
that the lowest level of indexing is not t
