--- pkg_tree.pod.orig	2001-12-12 11:44:40 UTC
+++ pkg_tree.pod
@@ -53,6 +53,12 @@ E<32>[~] edwin@k7E<gt>B<pkg_tree -v linu
  |\__ freetype2-2.0.5
   \__ XFree86-libraries-4.1.0 (unknown)
 
+Use the B<-t> parameter to show only top level packages,
+and B<-b> to show only bottom level packages. And B<-t> B<-q>
+together will give the list of top level packages without their
+dependencies, installing only these packages should install all
+currently installed packages.
+
 =head1 RETURN VALUES
 
 Always 0.