diff --git a/Shorewall/zones b/Shorewall/zones
index 51a92b21f..469ee0b01 100644
--- a/Shorewall/zones
+++ b/Shorewall/zones
@@ -40,7 +40,10 @@
 #		firewall
 #		      - Designates the firewall itself. You must have 
 #			exactly one 'firewall' zone. No options are
-#			permitted with a 'firewall' zone.
+#			permitted with a 'firewall' zone. The name that you 
+#			enter in the ZONE column will be stored in the shell
+#			variable $FW which you may use in other configuration
+#			files to designate the firewall zone.
 #
 #	OPTIONS,	A comma-separated list of options as follows:
 #	IN OPTIONS,