diff -r 91e52083f255 -r 4ad40aaed4bb java/parameter-lister/src/info/glogalcode/parameterLister/modules/XmlModule.java
--- a/java/parameter-lister/src/info/glogalcode/parameterLister/modules/XmlModule.java	Sat Sep 10 23:08:58 2016 +0200
+++ b/java/parameter-lister/src/info/glogalcode/parameterLister/modules/XmlModule.java	Sat Sep 10 23:22:29 2016 +0200
@@ -7,6 +7,8 @@
 import java.util.List;
 
 /**
+ * Just a simple XML output.
+ * For more complex documents, use {@linkplain javax.xml.stream.XMLStreamWriter}
  *
  * @author Ing. František Kučera (frantovo.cz)
  */
@@ -15,12 +17,24 @@
 	@Override
 	public void process(OutputStream output, List<String> parameters) throws OutputModuleException {
 		try (PrintWriter out = new PrintWriter(output)) {
+			out.println("<parameters>");
 			for (String parameter : parameters) {
-				out.print("xml> ");
-				out.println(parameter);
+				out.print("\t<parameter>");
+				out.print(escapeXmlText(parameter));
+				out.println("</parameter>");
 				out.flush();
 			}
+			out.println("</parameters>");
 		}
 	}
 
+	/**
+	 * @param s original text
+	 * @return escaped text that can be safely concatenated between two XML tags (not safe for
+	 * attribute
+	 * values)
+	 */
+	private static String escapeXmlText(String s) {
+		return s.replaceAll("&", "&amp;").replaceAll("<", "&lt;").replaceAll(">", "&gt;");
+	}
 }