APPLICATION NOTE 112
 SPELLING DICTIONARY GENEALOGY
 Rev. 01

 The dictionary that is the basis of the XyWrite Spelling Checker is 
derived from the one developed by the Xerox Computational Linguistics 
Group in Palo Alto, CA. The Spelling Checker dictionary is licensed 
by XYQUEST from Microlytics, who, in turn, license it from Xerox. The 
same dictionary is the source of the Microlytics SpellFinder product.

 The Xerox dictionary was constructed using a cross-polling technique 
that involved comparisons with seven spelling authorities. For each 
word in the dictionary, all seven sources were referenced.  The 
acceptance criteria was a majority rule, although in almost all cases 
where there was any disagreement, only one source was different from 
the others.

 Since the references are predominately American in origin, the 
resulting dictionary is weighted toward American spelling rather than 
British.

 The seven references are:

  American Heritage
  Merriam Webster's Collegiate
  Merriam Webster's Unabridged, Third Edition
  Oxford English
  Random House College
  Random House Unabridged
  Webster's Ninth Edition