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+ Unless required by applicable law or agreed to in writing, software
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+<html>
+<body>
+{@link org.apache.lucene.analysis.TokenFilter} and {@link
+org.apache.lucene.analysis.Analyzer} implementations that use Snowball
+stemmers.
+<p>
+This project provides pre-compiled version of the Snowball stemmers
+based on revision 500 of the Tartarus Snowball repository,
+together with classes integrating them with the Lucene search engine.
+</p>
+<p>
+A few changes has been made to the static Snowball code and compiled stemmers:
+</p>
+<ul>
+ <li>Class SnowballProgram is made abstract and contains new abstract method stem() to avoid reflection in Lucene filter class SnowballFilter.</li>
+ <li>All use of StringBuffers has been refactored to StringBuilder for speed.</li>
+ <li>Snowball BSD license header has been added to the Java classes to avoid having RAT adding ASL headers.</li>
+</ul>
+<p>
+See the Snowball <a href ="http://snowball.tartarus.org/">home page</a> for more information about the algorithms.
+</p>
+
+<p>
+<b>IMPORTANT NOTICE ON BACKWARDS COMPATIBILITY!</b>
+</p>
+<p>
+An index created using the Snowball module in Lucene 2.3.2 and below
+might not be compatible with the Snowball module in Lucene 2.4 or greater.
+</p>
+<p>
+For more information about this issue see:
+https://issues.apache.org/jira/browse/LUCENE-1142
+</p>
+
+</body>
+</html>