Changes between WordNet 2.0 and 2.1

1 - Database files all follow Unix naming convention.  Index files are
index.pos and data files are data.pos where "pos" is:

noun
verb
adj
adv

2 - Hyponyms are now classified as either generic or INSTANCES, as
indicated in search output.

3 - Troponyms can be "full" or "brief" in graphical browser.  The
"brief" search was not available in graphical browser (wnb) but was in
command line interface (wn).

4 - Graphical browser now has a selection under "Options" to save the
current display and search output options settings as user's default
settings.  These settings will be used by default whenever the user
runs the interface.

5 - Many pertainyms in "adj.pert" have been replaced with
morphosemantic links.

6 - Windows version now uses registry variables to save path to
database and user options:

HKEY_LOCAL_MACHINE\SOFTWARE\WordNet\2.1\WNHome - Installation home
HKEY_CURRENT_USER\SOFTWARE\WordNet\2.1\wnres - Graphical interface
					       display options

7 - All nouns are in one tree under "entity" in "noun.Tops".

8 - WordNet URL is now "wordnet.princeton.edu"