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diff --git a/contrib/mtn2git/git2mtn.py b/contrib/mtn2git/git2mtn.py
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+++ b/contrib/mtn2git/git2mtn.py
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+#!/usr/bin/env python
+
+"""
+  Copyright (C) 2006, 2007 Holger Hans Peter Freyther
+
+  Permission is hereby granted, free of charge, to any person obtaining a copy
+  of this software and associated documentation files (the "Software"), to deal
+  in the Software without restriction, including without limitation the rights
+  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+  copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+  THE SOFTWARE.
+"""
+
+#############
+#
+# Use: This tool can merge one git-branch back to one branch in monotone
+#
+# Discussion:
+#   Merging from git to a monotone branch. Currently I see two modes which
+#   should be supported.
+#
+#    a) linear development. Only a couple of changes are done on top of the
+#       branch and nothing get merged. In this case we can merge everything
+#       back and each rev gets a cert with the branch.
+#       This should be possible using programs like git-rebase.
+#    b) we have merges inside our git-rev-list history. This means we need to
+#       merge every revision and can't attach any branch certs to the revision.
+#       And once we are done with this we will create a propagate like commit
+#       entry and we can give that new revision a cert with the branch name.
+#
+#       This means working in git is treated like a branch!
+#
+#       One difficulty is with git. This propagate like commit will create a new revision
+#       in monotone but none in git as both trees/manifests are the same. So what we have
+#       to make sure is to use the latest mtn revision for a given mark/git revision. This
+#       is where mtn2git.py needs to help. We will save a list of mtn revisions that have the
+#       same git version and then will read every of them and check the branch certs and will
+#       use the one matching our target branch!
+#############