--- ray/src/rt/m_mist.c	1996/04/17 14:10:23	2.6
+++ ray/src/rt/m_mist.c	1996/06/05 11:27:33	2.7
@@ -44,6 +44,10 @@ static char SCCSid[] = "$SunId$ LBL";
  *  scattering.  A value approaching 1 indicates strong forward scattering.
  */
 
+#ifndef  MAXSLIST
+#define  MAXSLIST	32	/* maximum sources to check */
+#endif
+
 #define RELAYDELIM	'>'		/* relay delimiter character */
 
 extern COLOR  cextinction;		/* global coefficient of extinction */