--- ray/src/rt/rv2.c	1991/11/12 17:09:52	2.1
+++ ray/src/rt/rv2.c	1991/12/19 14:54:55	2.3
@@ -246,7 +246,6 @@ register char  *s;
 getexposure(s)				/* get new exposure */
 char  *s;
 {
-	double  atof(), pow(), fabs();
 	char  buf[128];
 	register char  *cp;
 	register PNODE  *p;
@@ -341,7 +340,7 @@ register union {int i; double d; COLOR C;}  *ptr;
 	case 'b':			/* boolean */
 		if (sscanf(str, "%1s", buf) != 1) {
 			(*dev->comout)(dsc);
-			sprintf(buf, " (%c): ", ptr->i ? 'y' : 'n');
+			sprintf(buf, "? (%c): ", ptr->i ? 'y' : 'n');
 			(*dev->comout)(buf);
 			(*dev->comin)(buf, NULL);
 			if (buf[0] == '\0' ||