diff --git a/compatibility.md b/compatibility.md
index 056c71a..c80660e 100644
--- a/compatibility.md
+++ b/compatibility.md
@@ -24,6 +24,7 @@ TODO look up PDC 2008 talk "new shell user interface"
 
 - new animation and text engine
 - ribbon control (didn't this have some additional license?)
+- LVITEM.piColFmt
 
 ### Windows 8