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+lucene/ is a search engine library
+solr/ is a search engine server that uses lucene
+modules/ is shared code
+
+To compile the sources run 'ant compile'
+To run all the tests run 'ant test'
+To setup your ide run 'ant idea' or 'ant eclipse'
+
+For more information on how to contribute see:
+http://wiki.apache.org/lucene-java/HowToContribute
+http://wiki.apache.org/solr/HowToContribute