diff --git a/nx01-x4o-fc18/src/test/java/org/x4o/fc18/cake2/fcdoc/FCDocSegmentWriterCakeWord.java b/nx01-x4o-fc18/src/test/java/org/x4o/fc18/cake2/fcdoc/FCDocSegmentWriterCakeWord.java
index 572343f..da206a1 100644
--- a/nx01-x4o-fc18/src/test/java/org/x4o/fc18/cake2/fcdoc/FCDocSegmentWriterCakeWord.java
+++ b/nx01-x4o-fc18/src/test/java/org/x4o/fc18/cake2/fcdoc/FCDocSegmentWriterCakeWord.java
@@ -23,8 +23,11 @@
 package org.x4o.fc18.cake2.fcdoc;
 
 import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
 import java.util.List;
 import java.util.Optional;
+import java.util.PrimitiveIterator;
 
 import org.x4o.fc18.cake2.FourCornerX00PetitVideCoinCarne;
 import org.x4o.fc18.cake2.FourCornerX06BaklavaPointSequence;
@@ -92,6 +95,24 @@ public class FCDocSegmentWriterCakeWord implements FCDocSegmentWriter {
 		}
 		if (x21CodeDisplay.isPresent()) {
 			writeSequence(writer, "Sequence-X21", 6, x21CodeDisplay.get().codePointSequence());
+			StringBuilder bufUTF8 = new StringBuilder();
+			x21CodeDisplay.get().codePointSequence().forEach(v -> bufUTF8.appendCodePoint(v));
+			byte[] sequenceUTF8Bytes = bufUTF8.toString().getBytes(StandardCharsets.UTF_8);
+			List<Integer> sequenceUTF8 = new ArrayList<>();
+			for (int i = 0; i < sequenceUTF8Bytes.length; i++) {
+				sequenceUTF8.add(Byte.toUnsignedInt(sequenceUTF8Bytes[i]));
+			}
+			writeSequence(writer, "Sequence-X21-UTF8", 2, sequenceUTF8);
+			
+			StringBuilder bufXML = new StringBuilder();
+			PrimitiveIterator.OfInt codePoints = bufUTF8.codePoints().iterator();
+			while (codePoints.hasNext()) {
+				int codePoint = codePoints.nextInt();
+				bufXML.append("&amp;#x"); // manual &amp to show literal escape string
+				bufXML.append(Integer.toHexString(codePoint));
+				bufXML.append(";");
+			}
+			writer.docTableRow("Sequence-X21-XML", bufXML.toString());
 		}
 		writer.docTableEnd();
 //	}