--- ray/src/px/pinterp.c	1997/07/09 11:23:07	2.29
+++ ray/src/px/pinterp.c	1997/10/20 16:36:32	2.30
@@ -39,7 +39,7 @@ static char SCCSid[] = "$SunId$ LBL";
 
 #define PACKSIZ		256		/* max. calculation packet size */
 
-#define RTCOM		"rtrace -h- -ovl -fff "
+#define RTCOM		"rtrace -h- -ovl -fff -ld- -i- -I- "
 
 #define ABS(x)		((x)>0?(x):-(x))