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lib/python/Products/ZCatalog/README.txt

@@ -19,3 +19,22 @@ ZCatalog
 
     o Restart your Zope installation.
 
+
+ Notes for Zope 2.5
+  
+   Zope 2.5 now fully supports unicode. The unicode supports
+   keyword indexes and text indexes.
+
+     - Properties to be indexed using a KeywordIndex may 
+       now contain strings and/or unicode strings. Queries
+       on KeywordIndexes now support also unicode strings.
+
+
+     - Properties to be indexed with a TextIndex can be either
+       strings or unicode strings. The corresponding TextIndex
+       *must* use a vocabulary that uses the new UnicodeSplitter.
+       The UnicodeSplitter will not be the default splitter so 
+       the standard vocabulary of the ZCatalog will not support
+       unicode except it is replaced with a new vocabulary using
+       the unicode splitter.
+