--- ray/src/hd/rhdobj.h	1998/08/27 19:33:28	3.3
+++ ray/src/hd/rhdobj.h	1998/12/31 12:57:06	3.5
@@ -44,8 +44,9 @@ int
 dobj_command(cmd, args)		: check/run object display command
 char	*cmd, *args;		: command name and argument string
 
-Check to see if this is an object display command, and return the command
-number after running it if it is, or -1 if it isn't.  Error messages should
+Check to see if this is an object display command, and return -1 if
+it isn't.  If it is a valid command that results in some visible
+change, return non-zero, otherwise return 0.  Error messages should
 be printed with error(COMMAND,err).
 
 
@@ -61,13 +62,14 @@ of the intersected object is returned, or "" if none. 
 then all visible objects are checked, but the name is not returned.
 
 
-void
+int
 dobj_render()			: render visible objects to OpenGL
 
 Renders all display objects using OpenGL, assuming desired view has
 been set.  This routine also assumes that the tone-mapping library
 is being used to set exposure, and it queries this information to
-adjust light sources as necessary for illuminated objects.
+adjust light sources as necessary for illuminated objects.  Returns
+the number of objects rendered.
 
 
 void