--- ray/src/px/pcomb.c	1993/05/03 12:13:03	2.12
+++ ray/src/px/pcomb.c	1994/02/27 10:16:52	2.14
@@ -21,8 +21,8 @@ static char SCCSid[] = "$SunId$ LBL";
 #include "view.h"
 
 #define MAXINP		32		/* maximum number of input files */
-#define WINSIZ		9		/* scanline window size */
-#define MIDSCN		4		/* current scan position */
+#define WINSIZ		17		/* scanline window size */
+#define MIDSCN		((WINSIZ-1)/2+1)
 
 struct {
 	char	*name;		/* file or command name */
@@ -106,6 +106,7 @@ char	*argv[];
 			}
 		break;
 	}
+	newheader("RADIANCE", stdout);	/* start header */
 					/* process files */
 	for (nfiles = 0; nfiles < MAXINP; nfiles++) {
 		setcolor(input[nfiles].coef, 1.0, 1.0, 1.0);
@@ -224,8 +225,9 @@ char	*s;
 	double	d;
 	COLOR	ctmp;
 
-	if (isformat(s)) {			/* check format */
-		formatval(fmt, s);
+	if (isheadid(s))			/* header id */
+		return;		/* don't echo */
+	if (formatval(fmt, s)) {		/* check format */
 		wrongformat = strcmp(fmt, COLRFMT);
 		return;		/* don't echo */
 	}