diff --git a/library/src/test/java/org/mustangproject/ZUGFeRD/VisualizationTest.java b/library/src/test/java/org/mustangproject/ZUGFeRD/VisualizationTest.java
index a59199f4..3ab73e7d 100644
--- a/library/src/test/java/org/mustangproject/ZUGFeRD/VisualizationTest.java
+++ b/library/src/test/java/org/mustangproject/ZUGFeRD/VisualizationTest.java
@@ -1,289 +1,313 @@
-/**
- * *********************************************************************
- * <p>
- * Copyright 2019 Jochen Staerk
- * <p>
- * Use is subject to license terms.
- * <p>
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not
- * use this file except in compliance with the License. You may obtain a copy
- * of the License at http://www.apache.org/licenses/LICENSE-2.0.
- * <p>
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * <p>
- * See the License for the specific language governing permissions and
- * limitations under the License.
- * <p>
- * **********************************************************************
- */
-package org.mustangproject.ZUGFeRD;
-
-import org.junit.FixMethodOrder;
-import org.junit.runners.MethodSorters;
-import org.mustangproject.util.ByteArraySearcher;
-import org.xml.sax.SAXException;
-
-import javax.xml.parsers.ParserConfigurationException;
-import javax.xml.transform.TransformerException;
-import java.io.File;
-import java.io.IOException;
-import java.nio.charset.StandardCharsets;
-import java.nio.file.Files;
-import java.nio.file.Paths;
-
-@FixMethodOrder(MethodSorters.NAME_ASCENDING)
-public class VisualizationTest extends ResourceCase {
-
-	final String TARGET_PDF_CII = "./target/testout-Visualization-cii.pdf";
-	final String TARGET_PDF_UBL = "./target/testout-Visualization-cii.pdf";
-
-	public void testCIIVisualizationBasic() {
-
-		// the writing part
-		String sourceFilename = "factur-x.xml";
-		File CIIinputFile = getResourceAsFile(sourceFilename);
-
-		String expected = null;
-		String result = null;
-		try {
-			ZUGFeRDVisualizer zvi = new ZUGFeRDVisualizer();
-			/* remove file endings so that tests can also pass after checking
-			   out from git with arbitrary options (which may include CSRF changes)
-			 */
-			result = zvi.visualize(CIIinputFile.getAbsolutePath(), ZUGFeRDVisualizer.Language.FR)
-				.replace("\r", "")
-				.replace("\n", "")
-				.replace("\t", "")
-				.replace(" ", "");
-
-			File expectedResult = getResourceAsFile("factur-x-vis.fr.html");
-			expected = new String(Files.readAllBytes(expectedResult.toPath()), StandardCharsets.UTF_8)
-				.replace("\r", "")
-				.replace("\n", "")
-				.replace("\t", "")
-				.replace(" ", "");
-			// remove linebreaks as well...
-
-		} catch (UnsupportedOperationException e) {
-			fail("UnsupportedOperationException should not happen: " + e.getMessage());
-		} catch (IllegalArgumentException e) {
-			fail("IllegalArgumentException should not happen: " + e.getMessage());
-		} catch (TransformerException e) {
-			fail("TransformerException should not happen: " + e.getMessage());
-		} catch (IOException e) {
-			fail("IOException should not happen: " + e.getMessage());
-		} catch (ParserConfigurationException e) {
-			fail("ParserConfigurationException should not happen: " + e.getMessage());
-		} catch (SAXException e) {
-			fail("SAXException should not happen: " + e.getMessage());
-		}
-
-
-		assertNotNull(result);
-		// Reading ZUGFeRD
-		assertEquals(expected, result);
-	}
-
-	public void testCIIVisualizationExtended() {
-
-		// the writing part
-		String sourceFilename = "factur-x-extended.xml";
-		File CIIinputFile = getResourceAsFile(sourceFilename);
-
-		String expected = null;
-		String result = null;
-		try {
-			ZUGFeRDVisualizer zvi = new ZUGFeRDVisualizer();
-			/* remove file endings so that tests can also pass after checking
-			   out from git with arbitrary options (which may include CSRF changes)
-			 */
-			result = zvi.visualize(CIIinputFile.getAbsolutePath(), ZUGFeRDVisualizer.Language.DE).replace("\r", "").replace("\n", "")
-				.replace("\t", "")
-				.replace(" ", "");
-
-			File expectedResult = getResourceAsFile("factur-x-vis-extended.de.html");
-			expected = new String(Files.readAllBytes(expectedResult.toPath()), StandardCharsets.UTF_8).replace("\r", "").replace("\n", "")
-				.replace("\t", "")
-				.replace(" ", "");
-			// remove linebreaks as well...
-
-		} catch (UnsupportedOperationException e) {
-			fail("UnsupportedOperationException should not happen: " + e.getMessage());
-		} catch (IllegalArgumentException e) {
-			fail("IllegalArgumentException should not happen: " + e.getMessage());
-		} catch (TransformerException e) {
-			fail("TransformerException should not happen: " + e.getMessage());
-		} catch (IOException e) {
-			fail("IOException should not happen: " + e.getMessage());
-		} catch (ParserConfigurationException e) {
-			fail("ParserConfigurationException should not happen: " + e.getMessage());
-		} catch (SAXException e) {
-			fail("SAXException should not happen: " + e.getMessage());
-		}
-
-
-		assertNotNull(result);
-		// Reading ZUGFeRD
-		assertEquals(expected, result);
-	}
-
-	public void testUBLCreditNoteVisualizationBasic() {
-
-		// the writing part
-		File UBLinputFile = getResourceAsFile("ubl-creditnote.xml");
-
-		String expected = null;
-		String result = null;
-		try {
-			ZUGFeRDVisualizer zvi = new ZUGFeRDVisualizer();
-			/* remove file endings so that tests can also pass after checking
-			   out from git with arbitrary options (which may include CSRF changes)
-			 */
-			result = zvi.visualize(UBLinputFile.getAbsolutePath(), ZUGFeRDVisualizer.Language.EN).replace("\r", "").replace("\n", "").replace("\t", "").replace(" ", "");
-
-			File expectedResult = getResourceAsFile("factur-x-vis-ubl-creditnote.en.html");
-			expected = new String(Files.readAllBytes(expectedResult.toPath()), StandardCharsets.UTF_8).replace("\r", "").replace("\n", "").replace("\t", "").replace(" ", "");
-			// remove linebreaks as well...
-
-		} catch (UnsupportedOperationException e) {
-			fail("UnsupportedOperationException should not happen: " + e.getMessage());
-		} catch (IllegalArgumentException e) {
-			fail("IllegalArgumentException should not happen: " + e.getMessage());
-		} catch (TransformerException e) {
-			fail("TransformerException should not happen: " + e.getMessage());
-		} catch (IOException e) {
-			fail("IOException should not happen: " + e.getMessage());
-		} catch (ParserConfigurationException e) {
-			fail("ParserConfigurationException should not happen: " + e.getMessage());
-		} catch (SAXException e) {
-			fail("SAXException should not happen: " + e.getMessage());
-		}
-
-
-		assertNotNull(result);
-		// Reading ZUGFeRD
-		assertEquals(expected, result);
-	}
-
-
-	public void testUBLVisualizationBasic() {
-
-		// the writing part
-		File UBLinputFile = getResourceAsFile("ubl/01.01a-INVOICE.ubl.xml");
-
-		String expected = null;
-		String result = null;
-		try {
-			ZUGFeRDVisualizer zvi = new ZUGFeRDVisualizer();
-			/* remove file endings so that tests can also pass after checking
-			   out from git with arbitrary options (which may include CSRF changes)
-			 */
-			result = zvi.visualize(UBLinputFile.getAbsolutePath(), ZUGFeRDVisualizer.Language.EN).replace("\r", "").replace("\n", "")
-				.replace("\t", "")
-				.replace(" ", "");
-
-			File expectedResult = getResourceAsFile("factur-x-vis-ubl.en.html");
-			expected = new String(Files.readAllBytes(expectedResult.toPath()), StandardCharsets.UTF_8).replace("\r", "").replace("\n", "")
-				.replace("\t", "")
-				.replace(" ", "");
-			// remove linebreaks as well...
-
-		} catch (UnsupportedOperationException e) {
-			fail("UnsupportedOperationException should not happen: " + e.getMessage());
-		} catch (IllegalArgumentException e) {
-			fail("IllegalArgumentException should not happen: " + e.getMessage());
-		} catch (TransformerException e) {
-			fail("TransformerException should not happen: " + e.getMessage());
-		} catch (IOException e) {
-			fail("IOException should not happen: " + e.getMessage());
-		} catch (ParserConfigurationException e) {
-			fail("ParserConfigurationException should not happen: " + e.getMessage());
-		} catch (SAXException e) {
-			fail("SAXException should not happen: " + e.getMessage());
-		}
-
-
-		assertNotNull(result);
-		// Reading ZUGFeRD
-		assertEquals(expected, result);
-	}
-
-	public void testPDFVisualizationCII() {
-
-		File CIIinputFile = getResourceAsFile("cii/01.01a-INVOICE.cii.xml");
-
-		// the writing part
-
-		String expected = null;
-		String result = null;
-		try {
-			ZUGFeRDVisualizer zvi = new ZUGFeRDVisualizer();
-			zvi.toPDF(CIIinputFile.getAbsolutePath(), TARGET_PDF_CII);
-		} catch (UnsupportedOperationException e) {
-			fail("UnsupportedOperationException should not happen: " + e.getMessage());
-		} catch (IllegalArgumentException e) {
-			fail("IllegalArgumentException should not happen: " + e.getMessage());
-		}
-
-		try {
-			assertTrue(ByteArraySearcher.startsWith(Files.readAllBytes(Paths.get(TARGET_PDF_CII)), new byte[]{'%', 'P', 'D', 'F'}));
-		} catch (IOException e) {
-			fail("IOException should not occur");
-		}
-	}
-
-	public void testPDFVisualizationUBL() {
-
-		File UBLinputFile = getResourceAsFile("ubl/01.01a-INVOICE.ubl.xml");
-
-		// the writing part
-		String sourceFilename = "factur-x.xml";
-
-		String expected = null;
-		String result = null;
-		try {
-			ZUGFeRDVisualizer zvi = new ZUGFeRDVisualizer();
-			zvi.toPDF(UBLinputFile.getAbsolutePath(), TARGET_PDF_UBL);
-		} catch (UnsupportedOperationException e) {
-			fail("UnsupportedOperationException should not happen: " + e.getMessage());
-		} catch (IllegalArgumentException e) {
-			fail("IllegalArgumentException should not happen: " + e.getMessage());
-		}
-
-
-		try {
-			assertTrue(ByteArraySearcher.startsWith(Files.readAllBytes(Paths.get(TARGET_PDF_CII)), new byte[]{'%', 'P', 'D', 'F'}));
-		} catch (IOException e) {
-			fail("IOException should not occur");
-		}
-	}
-
-	public void testPDFVisualizationUBLCreditNote() {
-
-		File UBLinputFile = getResourceAsFile("ubl/UBL-CreditNote-2.1-Example.ubl.xml");
-
-		// the writing part
-		String sourceFilename = "factur-x.xml";
-
-		String expected = null;
-		String result = null;
-		try {
-			ZUGFeRDVisualizer zvi = new ZUGFeRDVisualizer();
-			zvi.toPDF(UBLinputFile.getAbsolutePath(), TARGET_PDF_UBL);
-		} catch (UnsupportedOperationException e) {
-			fail("UnsupportedOperationException should not happen: " + e.getMessage());
-		} catch (IllegalArgumentException e) {
-			fail("IllegalArgumentException should not happen: " + e.getMessage());
-		}
-
-
-		try {
-			assertTrue(ByteArraySearcher.startsWith(Files.readAllBytes(Paths.get(TARGET_PDF_CII)), new byte[]{'%', 'P', 'D', 'F'}));
-		} catch (IOException e) {
-			fail("IOException should not occur");
-		}
-	}
-
-}
+/**
+ * *********************************************************************
+ * <p>
+ * Copyright 2019 Jochen Staerk
+ * <p>
+ * Use is subject to license terms.
+ * <p>
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy
+ * of the License at http://www.apache.org/licenses/LICENSE-2.0.
+ * <p>
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * <p>
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * <p>
+ * **********************************************************************
+ */
+package org.mustangproject.ZUGFeRD;
+
+import org.junit.FixMethodOrder;
+import org.junit.runners.MethodSorters;
+import org.mustangproject.util.ByteArraySearcher;
+import org.xml.sax.SAXException;
+
+import javax.xml.parsers.ParserConfigurationException;
+import javax.xml.transform.TransformerException;
+import java.io.File;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+
+@FixMethodOrder(MethodSorters.NAME_ASCENDING)
+public class VisualizationTest extends ResourceCase {
+
+	final String TARGET_PDF_CII = "./target/testout-Visualization-cii.pdf";
+	final String TARGET_PDF_UBL = "./target/testout-Visualization-cii.pdf";
+
+	public void testCIIVisualizationBasic() {
+
+		// the writing part
+		String sourceFilename = "factur-x.xml";
+		File CIIinputFile = getResourceAsFile(sourceFilename);
+
+		String expected = null;
+		String result = null;
+		try {
+			ZUGFeRDVisualizer zvi = new ZUGFeRDVisualizer();
+			/* remove file endings so that tests can also pass after checking
+			   out from git with arbitrary options (which may include CSRF changes)
+			 */
+			result = zvi.visualize(CIIinputFile.getAbsolutePath(), ZUGFeRDVisualizer.Language.FR);
+			Files.write(Paths.get("./target/testout-factur-x-vis.fr.html"), result.getBytes(StandardCharsets.UTF_8));
+			result = result
+				.replace("\r", "")
+				.replace("\n", "")
+				.replace("\t", "")
+				.replace(" ", "");
+
+			File expectedResult = getResourceAsFile("factur-x-vis.fr.html");
+			expected = new String(Files.readAllBytes(expectedResult.toPath()), StandardCharsets.UTF_8)
+				.replace("\r", "")
+				.replace("\n", "")
+				.replace("\t", "")
+				.replace(" ", "");
+			// remove linebreaks as well...
+
+		} catch (UnsupportedOperationException e) {
+			fail("UnsupportedOperationException should not happen: " + e.getMessage());
+		} catch (IllegalArgumentException e) {
+			fail("IllegalArgumentException should not happen: " + e.getMessage());
+		} catch (TransformerException e) {
+			fail("TransformerException should not happen: " + e.getMessage());
+		} catch (IOException e) {
+			fail("IOException should not happen: " + e.getMessage());
+		} catch (ParserConfigurationException e) {
+			fail("ParserConfigurationException should not happen: " + e.getMessage());
+		} catch (SAXException e) {
+			fail("SAXException should not happen: " + e.getMessage());
+		}
+
+
+		assertNotNull(result);
+		// Reading ZUGFeRD
+		assertEquals(expected, result);
+	}
+
+	public void testCIIVisualizationExtended() {
+
+		// the writing part
+		String sourceFilename = "factur-x-extended.xml";
+		File CIIinputFile = getResourceAsFile(sourceFilename);
+
+		String expected = null;
+		String result = null;
+		try {
+			ZUGFeRDVisualizer zvi = new ZUGFeRDVisualizer();
+			/* remove file endings so that tests can also pass after checking
+			   out from git with arbitrary options (which may include CSRF changes)
+			 */
+			result = zvi.visualize(CIIinputFile.getAbsolutePath(), ZUGFeRDVisualizer.Language.DE);
+			Files.write(Paths.get("./target/testout-factur-x-vis-extended.de.html"), result.getBytes(StandardCharsets.UTF_8));
+			result = result
+				.replace("\r", "")
+				.replace("\n", "")
+				.replace("\t", "")
+				.replace(" ", "");
+
+			File expectedResult = getResourceAsFile("factur-x-vis-extended.de.html");
+			expected = new String(Files.readAllBytes(expectedResult.toPath()), StandardCharsets.UTF_8)
+				.replace("\r", "")
+				.replace("\n", "")
+				.replace("\t", "")
+				.replace(" ", "");
+			// remove linebreaks as well...
+
+		} catch (UnsupportedOperationException e) {
+			fail("UnsupportedOperationException should not happen: " + e.getMessage());
+		} catch (IllegalArgumentException e) {
+			fail("IllegalArgumentException should not happen: " + e.getMessage());
+		} catch (TransformerException e) {
+			fail("TransformerException should not happen: " + e.getMessage());
+		} catch (IOException e) {
+			fail("IOException should not happen: " + e.getMessage());
+		} catch (ParserConfigurationException e) {
+			fail("ParserConfigurationException should not happen: " + e.getMessage());
+		} catch (SAXException e) {
+			fail("SAXException should not happen: " + e.getMessage());
+		}
+
+
+		assertNotNull(result);
+		// Reading ZUGFeRD
+		assertEquals(expected, result);
+	}
+
+	public void testUBLCreditNoteVisualizationBasic() {
+
+		// the writing part
+		File UBLinputFile = getResourceAsFile("ubl-creditnote.xml");
+
+		String expected = null;
+		String result = null;
+		try {
+			ZUGFeRDVisualizer zvi = new ZUGFeRDVisualizer();
+			/* remove file endings so that tests can also pass after checking
+			   out from git with arbitrary options (which may include CSRF changes)
+			 */
+			result = zvi.visualize(UBLinputFile.getAbsolutePath(), ZUGFeRDVisualizer.Language.EN);
+			Files.write(Paths.get("./target/testout-factur-x-vis-ubl-creditnote.en.html"), result.getBytes(StandardCharsets.UTF_8));
+			result = result
+				.replace("\r", "")
+				.replace("\n", "")
+				.replace("\t", "")
+				.replace(" ", "");
+
+			File expectedResult = getResourceAsFile("factur-x-vis-ubl-creditnote.en.html");
+			expected = new String(Files.readAllBytes(expectedResult.toPath()), StandardCharsets.UTF_8)
+				.replace("\r", "")
+				.replace("\n", "")
+				.replace("\t", "")
+				.replace(" ", "");
+			// remove linebreaks as well...
+
+		} catch (UnsupportedOperationException e) {
+			fail("UnsupportedOperationException should not happen: " + e.getMessage());
+		} catch (IllegalArgumentException e) {
+			fail("IllegalArgumentException should not happen: " + e.getMessage());
+		} catch (TransformerException e) {
+			fail("TransformerException should not happen: " + e.getMessage());
+		} catch (IOException e) {
+			fail("IOException should not happen: " + e.getMessage());
+		} catch (ParserConfigurationException e) {
+			fail("ParserConfigurationException should not happen: " + e.getMessage());
+		} catch (SAXException e) {
+			fail("SAXException should not happen: " + e.getMessage());
+		}
+
+
+		assertNotNull(result);
+		// Reading ZUGFeRD
+		assertEquals(expected, result);
+	}
+
+
+	public void testUBLVisualizationBasic() {
+
+		// the writing part
+		File UBLinputFile = getResourceAsFile("ubl/01.01a-INVOICE.ubl.xml");
+
+		String expected = null;
+		String result = null;
+		try {
+			ZUGFeRDVisualizer zvi = new ZUGFeRDVisualizer();
+			/* remove file endings so that tests can also pass after checking
+			   out from git with arbitrary options (which may include CSRF changes)
+			 */
+			result = zvi.visualize(UBLinputFile.getAbsolutePath(), ZUGFeRDVisualizer.Language.EN);
+			Files.write(Paths.get("./target/testout-factur-x-vis-ubl.en.html"), result.getBytes(StandardCharsets.UTF_8));
+			result = result
+				.replace("\r", "")
+				.replace("\n", "")
+				.replace("\t", "")
+				.replace(" ", "");
+
+			File expectedResult = getResourceAsFile("factur-x-vis-ubl.en.html");
+			expected = new String(Files.readAllBytes(expectedResult.toPath()), StandardCharsets.UTF_8)
+				.replace("\r", "")
+				.replace("\n", "")
+				.replace("\t", "")
+				.replace(" ", "");
+			// remove linebreaks as well...
+
+		} catch (UnsupportedOperationException e) {
+			fail("UnsupportedOperationException should not happen: " + e.getMessage());
+		} catch (IllegalArgumentException e) {
+			fail("IllegalArgumentException should not happen: " + e.getMessage());
+		} catch (TransformerException e) {
+			fail("TransformerException should not happen: " + e.getMessage());
+		} catch (IOException e) {
+			fail("IOException should not happen: " + e.getMessage());
+		} catch (ParserConfigurationException e) {
+			fail("ParserConfigurationException should not happen: " + e.getMessage());
+		} catch (SAXException e) {
+			fail("SAXException should not happen: " + e.getMessage());
+		}
+
+
+		assertNotNull(result);
+		// Reading ZUGFeRD
+		assertEquals(expected, result);
+	}
+
+	public void testPDFVisualizationCII() {
+
+		File CIIinputFile = getResourceAsFile("cii/01.01a-INVOICE.cii.xml");
+
+		// the writing part
+
+		String expected = null;
+		String result = null;
+		try {
+			ZUGFeRDVisualizer zvi = new ZUGFeRDVisualizer();
+			zvi.toPDF(CIIinputFile.getAbsolutePath(), TARGET_PDF_CII);
+		} catch (UnsupportedOperationException e) {
+			fail("UnsupportedOperationException should not happen: " + e.getMessage());
+		} catch (IllegalArgumentException e) {
+			fail("IllegalArgumentException should not happen: " + e.getMessage());
+		}
+
+		try {
+			assertTrue(ByteArraySearcher.startsWith(Files.readAllBytes(Paths.get(TARGET_PDF_CII)), new byte[]{'%', 'P', 'D', 'F'}));
+		} catch (IOException e) {
+			fail("IOException should not occur");
+		}
+	}
+
+	public void testPDFVisualizationUBL() {
+
+		File UBLinputFile = getResourceAsFile("ubl/01.01a-INVOICE.ubl.xml");
+
+		// the writing part
+		String sourceFilename = "factur-x.xml";
+
+		String expected = null;
+		String result = null;
+		try {
+			ZUGFeRDVisualizer zvi = new ZUGFeRDVisualizer();
+			zvi.toPDF(UBLinputFile.getAbsolutePath(), TARGET_PDF_UBL);
+		} catch (UnsupportedOperationException e) {
+			fail("UnsupportedOperationException should not happen: " + e.getMessage());
+		} catch (IllegalArgumentException e) {
+			fail("IllegalArgumentException should not happen: " + e.getMessage());
+		}
+
+
+		try {
+			assertTrue(ByteArraySearcher.startsWith(Files.readAllBytes(Paths.get(TARGET_PDF_CII)), new byte[]{'%', 'P', 'D', 'F'}));
+		} catch (IOException e) {
+			fail("IOException should not occur");
+		}
+	}
+
+	public void testPDFVisualizationUBLCreditNote() {
+
+		File UBLinputFile = getResourceAsFile("ubl/UBL-CreditNote-2.1-Example.ubl.xml");
+
+		// the writing part
+		String sourceFilename = "factur-x.xml";
+
+		String expected = null;
+		String result = null;
+		try {
+			ZUGFeRDVisualizer zvi = new ZUGFeRDVisualizer();
+			zvi.toPDF(UBLinputFile.getAbsolutePath(), TARGET_PDF_UBL);
+		} catch (UnsupportedOperationException e) {
+			fail("UnsupportedOperationException should not happen: " + e.getMessage());
+		} catch (IllegalArgumentException e) {
+			fail("IllegalArgumentException should not happen: " + e.getMessage());
+		}
+
+
+		try {
+			assertTrue(ByteArraySearcher.startsWith(Files.readAllBytes(Paths.get(TARGET_PDF_CII)), new byte[]{'%', 'P', 'D', 'F'}));
+		} catch (IOException e) {
+			fail("IOException should not occur");
+		}
+	}
+
+}