--- ray/src/hd/rholo4.c	1997/11/20 11:40:11	3.6
+++ ray/src/hd/rholo4.c	1997/11/26 20:14:43	3.8
@@ -108,7 +108,7 @@ int	block;
 		disp_result(DS_STARTIMM, 0, NULL);
 		bundle_set(BS_ADD, (PACKHEAD *)buf, msg.nbytes/sizeof(PACKHEAD));
 		disp_result(DS_ENDIMM, 0, NULL);
-		disp_flush();
+		disp_check(0);		/* hack -- delete usu. follows add */
 		break;
 	case DR_DELSET:
 		if (msg.nbytes % sizeof(PACKHEAD))
@@ -125,6 +125,8 @@ int	block;
 		if (msg.nbytes)
 			error(INTERNAL, "bad DR_SHUTDOWN from display process");
 		return(0);		/* zero return signals shutdown */
+	case DR_NOOP:
+		break;
 	default:
 		error(INTERNAL, "unrecognized request from display process");
 	}