5 files changed, 30 insertions, 0 deletions
diff --git a/src/java/org/apache/fop/fo/ToBeImplementedElement.java b/src/java/org/apache/fop/fo/ToBeImplementedElement.java
index 2db857bda..9e655b954 100644
--- a/src/java/org/apache/fop/fo/ToBeImplementedElement.java
+++ b/src/java/org/apache/fop/fo/ToBeImplementedElement.java
@@ -67,6 +67,12 @@ public class ToBeImplementedElement extends FObj {
                              + "\" is not yet implemented.");
     }
 
+    /**
+     * This is a hook for an FOTreeVisitor subclass to be able to access
+     * this object.
+     * @param fotv the FOTreeVisitor subclass that can access this object.
+     * @see org.apache.fop.fo.FOTreeVisitor
+     */
     public void acceptVisitor(FOTreeVisitor fotv) {
         fotv.serveVisitor(this);
     }
diff --git a/src/java/org/apache/fop/fo/Unknown.java b/src/java/org/apache/fop/fo/Unknown.java
index fd6e0b4b2..218f4e18d 100644
--- a/src/java/org/apache/fop/fo/Unknown.java
+++ b/src/java/org/apache/fop/fo/Unknown.java
@@ -84,6 +84,12 @@ public class Unknown extends FONode {
         getLogger().debug("Layout Unknown element");
     }
 
+    /**
+     * This is a hook for an FOTreeVisitor subclass to be able to access
+     * this object.
+     * @param fotv the FOTreeVisitor subclass that can access this object.
+     * @see org.apache.fop.fo.FOTreeVisitor
+     */
     public void acceptVisitor(FOTreeVisitor fotv) {
         fotv.serveVisitor(this);
     }
diff --git a/src/java/org/apache/fop/fo/UnknownXMLObj.java b/src/java/org/apache/fop/fo/UnknownXMLObj.java
index 7e6577fc8..457cbdb72 100644
--- a/src/java/org/apache/fop/fo/UnknownXMLObj.java
+++ b/src/java/org/apache/fop/fo/UnknownXMLObj.java
@@ -118,6 +118,12 @@ public class UnknownXMLObj extends XMLObj {
         super.addCharacters(data, start, length);
     }
 
+    /**
+     * This is a hook for an FOTreeVisitor subclass to be able to access
+     * this object.
+     * @param fotv the FOTreeVisitor subclass that can access this object.
+     * @see org.apache.fop.fo.FOTreeVisitor
+     */
     public void acceptVisitor(FOTreeVisitor fotv) {
         fotv.serveVisitor(this);
     }
diff --git a/src/java/org/apache/fop/fo/XMLElement.java b/src/java/org/apache/fop/fo/XMLElement.java
index 08c91c2d3..7aa5fd512 100644
--- a/src/java/org/apache/fop/fo/XMLElement.java
+++ b/src/java/org/apache/fop/fo/XMLElement.java
@@ -86,6 +86,12 @@ public class XMLElement extends XMLObj {
         return namespace;
     }
 
+    /**
+     * This is a hook for an FOTreeVisitor subclass to be able to access
+     * this object.
+     * @param fotv the FOTreeVisitor subclass that can access this object.
+     * @see org.apache.fop.fo.FOTreeVisitor
+     */
     public void acceptVisitor(FOTreeVisitor fotv) {
         fotv.serveVisitor(this);
     }
diff --git a/src/java/org/apache/fop/fo/XMLObj.java b/src/java/org/apache/fop/fo/XMLObj.java
index c499748a6..e82db2712 100644
--- a/src/java/org/apache/fop/fo/XMLObj.java
+++ b/src/java/org/apache/fop/fo/XMLObj.java
@@ -231,6 +231,12 @@ public abstract class XMLObj extends FONode {
         element.appendChild(text);
     }
 
+    /**
+     * This is a hook for an FOTreeVisitor subclass to be able to access
+     * this object.
+     * @param fotv the FOTreeVisitor subclass that can access this object.
+     * @see org.apache.fop.fo.FOTreeVisitor
+     */
     public void acceptVisitor(FOTreeVisitor fotv) {
         fotv.serveVisitor(this);
     }