1 files changed, 2 insertions, 0 deletions
diff --git a/src/java/org/apache/fop/render/intermediate/IFConstants.java b/src/java/org/apache/fop/render/intermediate/IFConstants.java
index e7f7e1a00..4c9b9fc8d 100644
--- a/src/java/org/apache/fop/render/intermediate/IFConstants.java
+++ b/src/java/org/apache/fop/render/intermediate/IFConstants.java
@@ -50,4 +50,6 @@ public interface IFConstants extends XMLConstants {
     String EL_BORDER_RECT = "border-rect";
     String EL_FONT = "font";
     String EL_TEXT = "text";
+    /** used for accessibility */
+    String EL_STRUCTURE_TREE = "structure-tree";  
 }