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diff --git a/pdf-as-lib/src/main/java/at/knowcenter/wag/exactparser/parsing/results/XRefSubSectionParseResult.java b/pdf-as-lib/src/main/java/at/knowcenter/wag/exactparser/parsing/results/XRefSubSectionParseResult.java
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+/**
+ * <copyright> Copyright 2006 by Know-Center, Graz, Austria </copyright>
+ * PDF-AS has been contracted by the E-Government Innovation Center EGIZ, a
+ * joint initiative of the Federal Chancellery Austria and Graz University of
+ * Technology.
+ *
+ * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
+ * the European Commission - subsequent versions of the EUPL (the "Licence");
+ * You may not use this work except in compliance with the Licence.
+ * You may obtain a copy of the Licence at:
+ * http://www.osor.eu/eupl/
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the Licence is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the Licence for the specific language governing permissions and
+ * limitations under the Licence.
+ *
+ * This product combines work with different licenses. See the "NOTICE" text
+ * file for details on the various modules and licenses.
+ * The "NOTICE" text file is part of the distribution. Any derivative works
+ * that you distribute must include a readable copy of the "NOTICE" text file.
+ *
+ * $Id: XRefSubSectionParseResult.java,v 1.1 2006/08/25 17:00:59 wprinz Exp $
+ */
+package at.knowcenter.wag.exactparser.parsing.results;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Contains an xref sub-section.
+ *
+ * <p>
+ * An xref sub-section is an ordered list of xref lines. The object numbers of the
+ * corresponding objects are numbered incrementally.
+ * </p>
+ * <p>
+ * xref sections are important in Incremental Updates because they allow to
+ * specify explicitely which objects (object numbers) are contained in the xref.
+ * </p>
+ *
+ * @author wprinz
+ */
+public class XRefSubSectionParseResult extends ParseResult {
+
+ public int start_obj_number;
+
+ public int num_objects;
+
+ public List xref_lines = new ArrayList();
+
+ public void appendXRefLine(XRefLineParseResult xref_line) {
+ assert xref_lines.size() < num_objects;
+
+ xref_lines.add(xref_line);
+ }
+
+}