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diff --git a/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/exceptions/pdf/CaptionNotFoundException.java b/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/exceptions/pdf/CaptionNotFoundException.java
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+++ b/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/exceptions/pdf/CaptionNotFoundException.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.
+ */
+package at.gv.egiz.pdfas.exceptions.pdf;
+
+import at.gv.egiz.pdfas.exceptions.ErrorCode;
+import at.knowcenter.wag.egov.egiz.exceptions.PDFDocumentException;
+
+/**
+ * Exception thrown when a caption ("label") is not found in the content stream
+ * when determining the placeholders.
+ * 
+ * <p>
+ * This usually happens when the space for a caption is too small. Then the
+ * caption is wrapped into two lines and usually the separating whitespace is
+ * lost thus the BinarySignature is unable to find the caption String.
+ * </p>
+ * 
+ * @author wprinz
+ */
+public class CaptionNotFoundException extends PDFDocumentException
+{
+
+  /**
+   * SVUID.
+   */
+  private static final long serialVersionUID = -8959043531007857665L;
+
+  /**
+   * The problematic caption.
+   */
+  protected String caption = null;
+
+  /**
+   * Constructor.
+   * 
+   * @param caption
+   *          The problematic caption.
+   */
+  public CaptionNotFoundException(String caption)
+  {
+    super(ErrorCode.CAPTION_NOT_FOUND_EXCEPTION, "Caption not found in content stream. caption = " + caption);
+    this.caption = caption;
+  }
+
+  /**
+   * Returns the problematic caption.
+   * 
+   * @return Returns the problematic caption.
+   */
+  public String getCaption()
+  {
+    return this.caption;
+  }
+}