Index: trunk/tools/rundiffskycell.pl
===================================================================
--- trunk/tools/rundiffskycell.pl	(revision 29176)
+++ trunk/tools/rundiffskycell.pl	(revision 31941)
@@ -26,4 +26,5 @@
 my $dbname = "gpc1";
 my ($diff_id, $skycell_id, $threads, $update, $redirect);
+my $zaplog;
 
 GetOptions(
@@ -32,4 +33,5 @@
     'threads=i'         => \$threads,
     'redirect-output'   => \$redirect,
+    'zaplog'            => \$zaplog,
     'update'            => \$update,
     'pretend'           => \$pretend,
@@ -74,4 +76,5 @@
 $command .= " --reduction $reduction" if $reduction;
 $command .= " --threads $threads" if $threads;
+$command .= " --zaplog" if $zaplog;
 
 print "command to process this skycell\n";