--- ray/src/hd/rhdisp.h	1997/11/10 18:04:20	3.3
+++ ray/src/hd/rhdisp.h	1997/11/20 18:04:59	3.4
@@ -7,6 +7,7 @@
  */
 
 				/* display requests */
+#define DR_NOOP		0		/* to release from vain DR_ATTEN */
 #define DR_BUNDLE	1		/* bundle request */
 #define DR_ATTEN	2		/* request for attention */
 #define DR_SHUTDOWN	3		/* shutdown request */