--- ray/src/hd/rhd_qtree2c.c	2011/05/20 02:06:39	3.4
+++ ray/src/hd/rhd_qtree2c.c	2018/10/05 19:19:16	3.5
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char	RCSid[] = "$Id: rhd_qtree2c.c,v 3.4 2011/05/20 02:06:39 greg Exp $";
+static const char	RCSid[] = "$Id: rhd_qtree2c.c,v 3.5 2018/10/05 19:19:16 greg Exp $";
 #endif
 /*
  * Quadtree display support routines for cone output.
@@ -16,7 +16,7 @@ static void update(uby8 ca[3], RTREE *tp, int x0, int 
 
 static void
 redraw(	/* mark portion of a tree for redraw */
-	register RTREE	*tp,
+	RTREE	*tp,
 	int	x0,
 	int	y0,
 	int	x1,
@@ -26,7 +26,7 @@ redraw(	/* mark portion of a tree for redraw */
 {
 	int	quads = CH_ANY;
 	int	mx, my;
-	register int	i;
+	int	i;
 					/* compute midpoint */
 	mx = (x0 + x1) >> 1;
 	my = (y0 + y1) >> 1;
@@ -51,7 +51,7 @@ redraw(	/* mark portion of a tree for redraw */
 static void
 cpaint(	/* paint a cone within a rectangle */
 	uby8	rgb[3],
-	register float	*p,
+	float	*p,
 	int	x0,
 	int	y0,
 	int	x1,
@@ -96,7 +96,7 @@ cpaint(	/* paint a cone within a rectangle */
 static void
 update(	/* update tree display as needed */
 	uby8	ca[3],		/* returned average color */
-	register RTREE	*tp,
+	RTREE	*tp,
 	int	x0,
 	int	y0,
 	int	x1,
@@ -104,11 +104,11 @@ update(	/* update tree display as needed */
 )
 {
 	int	csm[3], nc;
-	register uby8	*cp;
+	uby8	*cp;
 	uby8	rgb[3];
 	int	gaps = 0;
 	int	mx, my;
-	register int	i;
+	int	i;
 					/* compute midpoint */
 	mx = (x0 + x1) >> 1;
 	my = (y0 + y1) >> 1;
@@ -149,7 +149,7 @@ update(	/* update tree display as needed */
 }
 
 
-extern void
+void
 qtRedraw(	/* redraw part or all of our screen */
 	int	x0,
 	int	y0,
@@ -168,7 +168,7 @@ qtRedraw(	/* redraw part or all of our screen */
 }
 
 
-extern void
+void
 qtUpdate(void)			/* update our tree display */
 {
 	uby8	ca[3];