--- ray/src/hd/holo.h	1998/12/04 11:37:47	3.18
+++ ray/src/hd/holo.h	2003/02/22 02:07:24	3.20
@@ -1,7 +1,4 @@
-/* Copyright (c) 1998 Silicon Graphics, Inc. */
-
-/* SCCSid "$SunId$ SGI" */
-
+/* RCSid: $Id: holo.h,v 3.20 2003/02/22 02:07:24 greg Exp $ */
 /*
  * Header file for holodeck programs
  *
@@ -104,6 +101,13 @@ extern double	hdray(), hdinter();
 extern unsigned	hdcode();
 extern int	hdfilord();
 
+#define FF_NEVER	0		/* never free fragments */
+#define FF_WRITE	01		/* free fragment on write */
+#define FF_ALLOC	02		/* free fragment on ray alloc */
+#define FF_READ		04		/* free fragment on read */
+#define FF_KILL		010		/* free fragment on beam kill */
+
+extern int	hdfragflags;		/* tells when to free fragments */
 extern unsigned	hdcachesize;		/* target cache size (bytes) */
 extern unsigned long	hdclock;	/* holodeck system clock */
 extern HOLO	*hdlist[HDMAX+1];	/* holodeck pointers (NULL term.) */