--- a/bin/imager	Thu Jul 28 11:12:38 2011 +0200
+++ b/bin/imager	Thu Jul 28 12:14:35 2011 +0200
@@ -29,7 +29,7 @@
 my %o = (
     compress  => undef,
     verbose   => undef,
-    blocksize => 4 * MiB,
+    blocksize => 2 * MiB,
 );
 lock_keys(%o);
 
@@ -209,10 +209,14 @@
 
 =over
 
-=item B<-z>[I<level>]|B<--compress>[=I<level>]
+=item B<-z> [I<level>]|B<--compress>[=I<level>]
 
 Use compression when writing the blocks to disk. (default: off)
 
+=item B<-b> I<blocksize>|B<--blocksize>=I<blocksize>
+
+The blocksize used. (may be suffixed with K, M, G). (default: 2MiB)
+
 =item B<-h>|B<--help>
 
 =item B<-m>|B<--man>