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diff --git a/src/java/org/apache/fop/afp/modca/Overlay.java b/src/java/org/apache/fop/afp/modca/Overlay.java
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+++ b/src/java/org/apache/fop/afp/modca/Overlay.java
@@ -0,0 +1,87 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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
+ *
+ * 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.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* $Id$ */
+
+package org.apache.fop.afp.modca;
+
+import java.io.IOException;
+import java.io.OutputStream;
+
+import org.apache.fop.afp.Factory;
+
+
+/**
+ * An overlay is a MO:DCA-P resource object.
+ *
+ * It may be stored in an external resource library or it may be
+ * carried in a resource group. An overlay is similar to a page in
+ * that it defines its own environment and carries the same data objects.
+ */
+public class Overlay extends PageObject {
+
+    /**
+     * Construct a new overlay object for the specified name argument, the overlay
+     * name should be an 8 character identifier.
+     *
+     * @param factory
+     *            the resource manager of the page.
+     * @param name
+     *            the name of the page.
+     * @param width
+     *            the width of the page.
+     * @param height
+     *            the height of the page.
+     * @param rotation
+     *            the rotation of the page.
+     * @param widthResolution
+     *            the width resolution of the page.
+     * @param heightResolution
+     *            the height resolution of the page.
+     */
+    public Overlay(Factory factory,
+            String name, int width, int height, int rotation,
+            int widthResolution, int heightResolution) {
+        super(factory, name, width, height, rotation, widthResolution, heightResolution);
+    }
+
+    /** {@inheritDoc} */
+    protected void writeStart(OutputStream os) throws IOException {
+        byte[] data = new byte[17];
+        copySF(data, Type.BEGIN, Category.OVERLAY);
+        os.write(data);
+    }
+
+    /** {@inheritDoc} */
+    protected void writeContent(OutputStream os) throws IOException {
+        super.writeContent(os);
+
+        getActiveEnvironmentGroup().writeToStream(os);
+
+        writeObjects(includePageSegments, os);
+        writeObjects(tagLogicalElements, os);
+        writeObjects(objects, os);
+    }
+
+
+    /** {@inheritDoc} */
+    protected void writeEnd(OutputStream os) throws IOException {
+        byte[] data = new byte[17];
+        copySF(data, Type.END, Category.OVERLAY);
+        os.write(data);
+    }
+}