diff --git a/ORCACDefs/control.h b/ORCACDefs/control.h
index 8e011a5..1e81285 100644
--- a/ORCACDefs/control.h
+++ b/ORCACDefs/control.h
@@ -43,6 +43,7 @@
 #define fTextCanDim 0x0008	        /* static text control */
 #define fSquishText 0x0010	        /* static text control */
 #define fNoTrackIcon 0x0008             /* make Icon Button play dead */
+#define testMemNever 0x0040             /* list control */
 
 /* CtlProc Codes */
 #define simpleProc 0x00000000L
diff --git a/ORCACDefs/list.h b/ORCACDefs/list.h
index d55361f..f2efa9b 100644
--- a/ORCACDefs/list.h
+++ b/ORCACDefs/list.h
@@ -26,6 +26,7 @@
 #define LIST_SELECT 0x0002              /* single selection only */
 
 /* memFlag Codes */
+#define memNever 0x20                   /* Inactive */
 #define memDisabled 0x40                /* Sets member flag to disabled */
 #define memSelected 0x80                /* Sets member flag to selected */
 struct LColorTable {