--- loncom/clusteradmin	2018/08/20 22:27:16	1.6
+++ loncom/clusteradmin	2018/08/20 22:31:49	1.7
@@ -2,7 +2,7 @@
 # The LearningOnline Network with CAPA
 # Push admin files from cluster manager to cluster's "name servers".
 #
-# $Id: clusteradmin,v 1.6 2018/08/20 22:27:16 raeburn Exp $
+# $Id: clusteradmin,v 1.7 2018/08/20 22:31:49 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -33,9 +33,12 @@
 
 =head1 DESCRIPTION
 
-Performs an adminstrative action on DNS hosts in the current hosts.tab
-file.  For this to work, the current host must be the cluster administrator
-on the target systems.  That is this must be a host in managers.tab
+Performs an adminstrative update on (a) "DNS" hosts or domains in the current 
+dns_hosts.tab or dns_domain.tab files, or (b) update of the Certificate 
+Revocation List (CRL) file for the cluster.  
+
+For this to work, the current host must be the cluster administrator
+on the target systems.  That is this must be a host in managers.tab.
 Furthermore, lonc must be running on this system.
 
 The action is specified by the 'command' parameter which may have additional arguments.
@@ -64,8 +67,8 @@ on this system.  'file' is the name of t
 
 =head1 ASSUMPTIONS
 
-Assume that loncapa is installedin /home/httpd/lib/perl so that we can use
-it's modules.  If this is not the case, you mus modify the
+Assume that loncapa is installed in /home/httpd/lib/perl so that we can use
+it's modules.  If this is not the case, you must modify the
 use lib line in the program before you can use it.