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diff --git a/bundles/org.eclipse.compare/compare/org/eclipse/compare/IEditableContent.java b/bundles/org.eclipse.compare/compare/org/eclipse/compare/IEditableContent.java
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+++ b/bundles/org.eclipse.compare/compare/org/eclipse/compare/IEditableContent.java
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+/*
+ * Licensed Materials - Property of IBM,
+ * WebSphere Studio Workbench
+ * (c) Copyright IBM Corp 2001
+ */
+package org.eclipse.compare;
+
+/**
+ * Common interface for objects with editable contents.
+ * Typically it is implemented by objects that also implement
+ * the <code>IStreamContentAccessor</code> interface.
+ * <p>
+ * Clients may implement this interface.
+ * <p>
+ * Note that implementing <code>IEditableContent</code> does not
+ * automatically mean that it is editable. An object is only editable if
+ * it implements <code>IEditableContent</code> and the <code>isEditable</code> method returns <code>true</code>.
+ *
+ * @see IStreamContentAccessor
+ */
+public interface IEditableContent {
+	
+	/**
+	 * Returns <code>true</code> if this object can be modified.
+	 * If it returns <code>false</code> the other methods of this API must not be called.
+	 * 
+	 * @return <code>true</code> if this object can be modified
+	 */
+	boolean isEditable();
+			
+	/**
+	 * Replaces the current content with the given new bytes.
+	 * 
+	 * @param newContent this new contents replaces the old contents
+	 */
+	void setContent(byte[] newContent); 
+
+	/**
+	 * This method is called on a parent to
+	 * - add a child,
+	 * - remove a child,
+	 * - copy the contents of a child
+	 * 
+	 * What to do is encoded in the two arguments as follows:
+	 * add:	child == null		other != null
+	 * remove:	child != null		other == null
+	 * copy:	child != null		other != null
+	 */
+	ITypedElement replace(ITypedElement child, ITypedElement other);
+}