--- ray/src/rt/rv2.c	1992/04/06 18:04:19	2.9
+++ ray/src/rt/rv2.c	1992/11/19 20:27:03	2.13
@@ -186,7 +186,6 @@ char  *s;
 getaim(s)				/* aim camera */
 char  *s;
 {
-	extern double  tan(), atan();
 	double  zfact;
 	VIEW  nv;
 
@@ -217,7 +216,6 @@ char  *s;
 getrotate(s)				/* rotate camera */
 char  *s;
 {
-	extern double  normalize(), tan(), atan();
 	VIEW  nv;
 	FVECT  v1;
 	double  angle, elev, zfact;
@@ -400,7 +398,7 @@ register char  *s;
 	extern int  ambdiv;
 	extern int  ambssamp;
 	extern int  ambounce;
-	extern int  directinvis;
+	extern int  directvis;
 	extern double  srcsizerat;
 	extern int  do_irrad;
 	extern double  specjitter;
@@ -437,9 +435,9 @@ register char  *s;
 		case 't':			/* threshold */
 			getparam(s+2, "direct threshold", 'r', &shadthresh);
 			break;
-		case 'i':			/* invisibility */
-			getparam(s+2, "direct invisibility",
-					'b', &directinvis);
+		case 'v':			/* visibility */
+			getparam(s+2, "direct visibility",
+					'b', &directvis);
 			break;
 		case 's':			/* sampling */
 			getparam(s+2, "direct sampling", 'r', &srcsizerat);
@@ -457,7 +455,7 @@ register char  *s;
 	case 'a':			/* ambient */
 		switch (s[1]) {
 		case 'v':			/* value */
-			getparam(s+2, "ambient value", 'C', ambval);
+			getparam(s+2, "ambient value", 'C', (COLOR *)ambval);
 			break;
 		case 'a':			/* accuracy */
 			getparam(s+2, "ambient accuracy", 'r', &ambacc);
@@ -595,6 +593,9 @@ char  *s;
 		error(COMMAND, errmsg);
 		return;
 	}
+#ifdef MSDOS
+	setmode(fileno(fp), O_BINARY);
+#endif
 	(*dev->comout)("writing \"");
 	(*dev->comout)(fname);
 	(*dev->comout)("\"...\n");