--- ray/src/rt/rtrace.c	1992/11/06 16:48:32	2.9
+++ ray/src/rt/rtrace.c	1993/01/20 15:19:51	2.11
@@ -50,7 +50,7 @@ double  shadthresh = .05;		/* shadow threshold */
 double  shadcert = .5;			/* shadow certainty */
 int  directrelay = 1;			/* number of source relays */
 int  vspretest = 512;			/* virtual source pretest density */
-int  directinvis = 0;			/* sources invisible? */
+int  directvis = 1;			/* sources visible? */
 double  srcsizerat = .25;		/* maximum ratio source size/dist. */
 
 double  specthresh = .15;		/* specular sampling threshold */
@@ -86,6 +86,10 @@ static int  (*putreal)();
 quit(code)			/* quit program */
 int  code;
 {
+#ifndef  NIX
+	headclean();		/* delete header file */
+	pfclean();		/* clean up persist files */
+#endif
 	exit(code);
 }