Index: jackrabbit-jcr-commons/src/main/java/org/apache/jackrabbit/JcrConstants.java
===================================================================
--- jackrabbit-jcr-commons/src/main/java/org/apache/jackrabbit/JcrConstants.java	(revision 1161002)
+++ jackrabbit-jcr-commons/src/main/java/org/apache/jackrabbit/JcrConstants.java	(working copy)
@@ -308,4 +308,32 @@
      * nt:versionedChild
      */
     public static final String NT_VERSIONEDCHILD = "nt:versionedChild";
+    /**
+     * jcr:title
+     */
+    public static final String JCR_TITLE = "jcr:title";
+    /**
+     * jcr:description
+     */
+    public static final String JCR_DESCRIPTION = "jcr:description";
+    /**
+     * jcr:createdBy
+     */
+    public static final String JCR_CREATED_BY = "jcr:createdBy";
+    /**
+     * jcr:lastModifiedBy
+     */
+    public static final String JCR_LAST_MODIFIED_BY = "jcr:lastModifiedBy";
+    /**
+     * mix:title
+     */
+    public static final String MIX_TITLE = "mix:title";
+    /**
+     * mix:created
+     */
+    public static final String MIX_CREATED = "mix:created";
+    /**
+     * mix:lastModified
+     */
+    public static final String MIX_LAST_MODIFIED = "mix:lastModified";
 }