diff --git a/Makefile b/Makefile
index 35a68b2..4658a1a 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
-CMD = blink bsearch G histogram upsidedown tracefile timestamp rand rclean rrm goodpasswd gitnext pdfman puniq ramusage ramusage
+CMD = blink bsearch G gitundo histogram upsidedown tracefile timestamp rand rclean rrm goodpasswd gitnext pdfman puniq ramusage ramusage
 
-all: blink/blink.1 bsearch/bsearch.1 G/G.1 goodpasswd/goodpasswd.1 histogram/histogram.1 puniq/puniq.1 rand/rand.1 rrm/rrm.1 timestamp/timestamp.1 tracefile/tracefile.1 upsidedown/upsidedown.1 wssh/wssh.1
+all: blink/blink.1 bsearch/bsearch.1 G/G.1 gitnext/gitnext.1 gitundo/gitundo.1 goodpasswd/goodpasswd.1 histogram/histogram.1 neno/neno.1 pdfman/pdfman.1 puniq/puniq.1 rand/rand.1 rrm/rrm.1 timestamp/timestamp.1 tracefile/tracefile.1 upsidedown/upsidedown.1 wssh/wssh.1
 
 %.1: %
 	pod2man $< > $@
diff --git a/README b/README
index 96988d3..d91322d 100644
--- a/README
+++ b/README
@@ -14,10 +14,14 @@ G - short hand for multi level grep.
 
 gitnext - Checkout next revision. Opposite of 'checkout HEAD^'.
 
+gitundo - Undo last commit.
+
 neno - No error no output. Only print STDERR and STDOUT if the command fails.
 
 puniq - Print unique lines the first time they are seen.
 
+pdfman - Convert man page to pdf and display it using evince.
+
 rand - Generate (pseudo-)random data
 
 rclean - Remove files with MD5 sums recorded by rrm (see below).
diff --git a/gitnext/gitnext b/gitnext/gitnext
index dcf9ccd..e63c661 100755
--- a/gitnext/gitnext
+++ b/gitnext/gitnext
@@ -1,6 +1,64 @@
 #!/bin/bash
 
-# Checkout next revision
-# Opposite of 'checkout HEAD^'
+: <<=cut
+=pod
+
+=head1 NAME
+
+gitnext - Checkout next git revision
+
+
+=head1 SYNOPSIS
+
+gitnext
+
+
+=head1 DESCRIPTION
+
+B<gitnext> does the opposite of B<git checkout HEAD^>. So instead of
+stepping backwards in time, it steps forwards.
+
+
+=head1 EXAMPLE
+
+Go to next revision
+
+  gitnext
+
+=head1 AUTHOR
+
+Copyright (C) 2017 Ole Tange,
+http://ole.tange.dk and Free Software Foundation, Inc.
+
+
+=head1 LICENSE
+
+Copyright (C) 2012 Free Software Foundation, Inc.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+at your option any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+=head1 DEPENDENCIES
+
+B<gitnext> uses B<git>.
+
+
+=head1 SEE ALSO
+
+B<git>
+
+
+=cut
 
 git checkout $(git log --reverse --ancestry-path HEAD..master|head -n 1|field 2)