diff --git a/talks-public/2018-02-04-deposit-vault-walkthrough/deposit-vault-walkthrough.org b/talks-public/2018-02-04-deposit-vault-walkthrough/deposit-vault-walkthrough.org
index f71da72..0ea8077 100644
--- a/talks-public/2018-02-04-deposit-vault-walkthrough/deposit-vault-walkthrough.org
+++ b/talks-public/2018-02-04-deposit-vault-walkthrough/deposit-vault-walkthrough.org
@@ -1,257 +1,308 @@
 #+COLUMNS: %40ITEM %10BEAMER_env(Env) %9BEAMER_envargs(Env Args) %10BEAMER_act(Act) %4BEAMER_col(Col) %10BEAMER_extra(Extra) %8BEAMER_opt(Opt)
 #+LATEX_HEADER_EXTRA: \usepackage{listings}
+# the latex headers below are only for the tikz diagram
+#+LATEX_HEADER_EXTRA: \usepackage{tikz}
+#+LATEX_HEADER_EXTRA: \usetikzlibrary{arrows,shapes}
+#+LATEX_HEADER_EXTRA: \definecolor{swh-orange}{RGB}{254,205,27}
+#+LATEX_HEADER_EXTRA: \definecolor{swh-red}{RGB}{226,0,38}
+#+LATEX_HEADER_EXTRA: \definecolor{swh-green}{RGB}{77,181,174}
+
 #+INCLUDE: "../../common/modules/prelude.org" :minlevel 1
 #+TITLE:  Source Code Deposit Walkthrough
 # does not allow short title, so we override it for beamer as follows :
 #+BEAMER_HEADER: \title[Software Heritage]{Software Heritage\\Source Code Deposit Walkthrough}
 #+BEAMER_HEADER: \author{Morane Gruenepter}
 #+BEAMER_HEADER: \date[04/01/2018, Deposit walkthrough]{04 January 2018\\Deposit walkthrough\\Paris, France}
 #+AUTHOR: Morane Gruenpeter
 #+DATE: 04 January 2018
 #+EMAIL: morane@gmail.com
 #+DESCRIPTION: Software Heritage: Source Code Deposit Walkthroug
 #+KEYWORDS: software heritage  preservation knowledge deposit technology sword
 
 #+BEAMER_HEADER: \institute[Software Heritage]{Metadata specialist\\Software Heritage\\\href{mailto:morane@softwareheritage.org}{\tt morane@softwareheritage.org}}
 
 
 * Source code deposit: the new SWH push feature
 ** Source code deposit: the new SWH push feature				  
   :PROPERTIES:
   :CUSTOM_ID: walkthrough
   :END:
 
 **** 
      First version of our software deposit prototype \\
      *\url{https://deposit.softwareheritage.org/}*
 **** Features
      - pushing *deposits* to the Software Heritage archive
        - software source code + metadata 
      - full *transparency* of the loading and downloading processes
      - download the deposit by cooking the bundle in the *vault*
 **** SWORD-compliant 
      - *SWORD v2* protocol for single and multipart deposits
      - deposit /MUST/, /SHOULD/ and /MAY/ contain certain metadata attributes 
 
 *  Deposit walkthrough
 **  Deposit walkthrough 
 *** Prepare source code for deposit
 #+BEAMER: \tiny
 #+BEGIN_SRC
 $ tar cvf <je-suis-gpl.tgz> </path/to/je-suis-gpl>
 #+END_SRC
 #+BEAMER: \pause
 
 *** Create metadata file with /MUST/ metadata
 #+BEAMER: \tiny
 - *the url* representing the location of the source /MUST/ be provided
 - *the external-identifier* /MUST/ be provided
 - *the name/title* of the software deposit /MUST/ be provided
 - *the author/s*- one or more authors /MUST/ be provided
 
 
 *** 
 #+BEAMER: \tiny
 #+BEGIN_SRC
 <?xml version="1.0"?>
     <entry xmlns="http://www.w3.org/2005/Atom"
              xmlns:codemeta="https://doi.org/10.5063/SCHEMA/CODEMETA-2.0">
         <title>Je suis GPL</title>
         <external_identifier>ext-id</external_identifier>
         <codemeta:url>forge.softwareheritage.org/source/jesuisgpl/</codemeta:url>
         <codemeta:description>Yes, this is another implementation of 
         "Hello, world!” when you run it.</codemeta:description>
         <codemeta:license>
             <codemeta:name>GPL</codemeta:name>
             <codemeta:url>https://www.gnu.org/licenses/gpl.html</codemeta:url>
         </codemeta:license>
         <codemeta:author>
             <codemeta:name> Reuben Thomas and Sami Kerola </codemeta:name>
             <codemeta:jobTitle> Maintainers </codemeta:affiliation>
         </codemeta:author>
     </entry>
 
 #+END_SRC
 
 
 
 **  Deposit walkthrough 
 *** Pushing a single deposit with metadata
 #+BEAMER: \tiny
 #+BEGIN_SRC
 $ swh-deposit --username 'name' --password 'pass' je-suis-gpl.tgz
 
 #+END_SRC
 #+BEAMER: \pause
 
 *** Response
 #+BEAMER: \tiny 
 #+BEGIN_SRC
 <entry xmlns="http://www.w3.org/2005/Atom"...>
     <deposit_id>11</deposit_id>
     <deposit_date>Jan. 4, 2018, 2:51 p.m.</deposit_date>
     <deposit_archive>je-suis-gpl.tar.gz</deposit_archive>
     <deposit_status>ready-for-checks</deposit_status>
     <!-- Edit-IRI -->
     <link rel="edit" href="...softwareheritage.org/1/col/11/metadata/"/>
     <!-- EM-IRI -->
     <link rel="edit-media" href="...softwareheritage..org/1/col/11/media/"/>
     <!-- State-IRI -->
     <link rel="alternate" \
      href="http://deposit.softwareheritage.org/1/col/11/status/"/>
    ...
 </entry>
 #+END_SRC
 
 **  Deposit walkthrough 
 *** multipart deposit
 #+BEAMER: \footnotesize
     A multipart deposit with *partial* status can be:
     - completely replaced
     - updated with new content or metadata
 
 #+BEAMER: \pause
  
 *** Update by replacing archive and metadata
 #+BEAMER: \tiny 
 #+BEGIN_SRC
 
 $ swh-deposit --username 'name' --password 'secret' \
               --deposit-id 11 updated-je-suis-gpl.tar.gz
 #+END_SRC
 #+BEAMER: \pause
 
 *** Complete multipart deposit
 #+BEAMER: \tiny 
 #+BEGIN_SRC
 
   $ swh-deposit --username 'name' --password 'secret' --partial \
                 foo.tar.gz
 
   $ swh-deposit --username 'name' --password 'secret' --partial \
                 --deposit-id 42 add-foo.tar.gz
 
   $ swh-deposit --username 'name' --password 'secret' \
                 --deposit-id 42 last-foo.tar.gz
 
 #+END_SRC
 
 **  Deposit walkthrough 
 *** What's your status?
 #+BEAMER: \footnotesize
-    - *partial* : multipart deposit is still ongoing
-    - *deposited*: deposit completed
-    - *rejected*: deposit failed the checks
-    - *verified*: content and metadata verified
-    - *done*: loading completed successfully
-    - *failed*: the deposit loading has failed 
+
+\tikzstyle{fail} = [draw, thin, fill=swh-red!80!swh-orange, minimum height=1.5em]
+\tikzstyle{processing} = [draw, thin, fill=swh-orange!100, minimum height=1.5em]
+\tikzstyle{success} = [draw, thin, fill=swh-green!80!swh-orange, minimum height=1.5em]
+
+\begin{figure}
+\begin{tikzpicture}[node distance=1.8cm, auto,>=latex', thick]
+    % We need to set at bounding box first. Otherwise the diagram
+    % will change position for each frame.
+    %\path[use as bounding box] (-1,0) rectangle (10,-2);
+    \path[->]<1-> node[processing] (partial) {partial}
+    node[success, right of=partial] (deposited) {deposited}
+   (partial) edge node {} (deposited)
+   node[processing, right of=deposited] (checking) {}
+   (deposited) edge node {} (checking)
+   node[success, right of=checking] (verified) {verified}
+   node[fail, below of=checking] (rejected) {rejected}
+    (checking) edge node {} (verified)
+   edge node[swap] {} (rejected)
+   node[processing, right of=verified] (loading) {}
+   node[success, right of=loading] (done) {done}
+   node[fail, below of=loading] (failed) {failed}
+  (verified) edge node {} (loading)
+  (loading) edge node {} (failed)
+  (loading) edge node {} (done);
+\end{tikzpicture}
+\end{figure}
+
 #+BEAMER: \pause
 
 *** Checking the deposit's state
 #+BEAMER: \tiny
 #+BEGIN_SRC
 $ swh-deposit --login 'name' --pass 'secret' --deposit-id '11' \
               --collection 'col' --status
 #+END_SRC
 #+BEAMER: \pause
 
 *** 
 #+BEAMER: \tiny
 #+BEGIN_SRC
 HTTP/1.0 200 OK
 Date: Thu, 04 Jan 2018 15:20:12 GMT...
 <entry xmlns="http://www.w3.org/2005/Atom"...>
     <deposit_id>11</deposit_id>
     <deposit_status>done</deposit_status>
     <deposit_status_detail>The deposit has been successfully loaded into
                          the Software Heritage archive</deposit_status_detail>
     <deposit_swh_id>swh:1:rev:sha1:608757ea...</deposit_swh_id>
 </entry>
 #+END_SRC
 
 ** 
 *** Deposit completed and loaded
 The deposit was succesfuly pushed and integrated into the archive.\\
 You can browse it using the deposit's /swh-id/:
 - *archive.softwareheritage.org/browse/<swh-id>*\\
+#+BEAMER: \pause
+
 *** Download
 Now we want to download the content with the
 #+BEAMER: \huge 
 *Vault*
 
 
 
 **  Vault walkthrough
 *** Software identifier to request download
 #+BEAMER: \footnotesize
 The swh-id *swh:1:rev:608757ea9bd8494d729732cc9a414948c160bd3c* 
 
 is composed of:
 - the context *swh:1:rev*
 - and the object identifier a sha1 hash \\
  *608757ea9bd8494d729732cc9a414948c160bd3c*
 We will use the object identifier to create a bundle to download
 *** Requesting download with swh-id
 #+BEAMER: \tiny
 #+BEGIN_SRC sh
 $ curl -X POST /api/1/vault/revision/608757ea.../gitfast
 #+END_SRC 
 
+*** Email notification
+#+BEAMER: \footnotesize
+optionally, an email POST parameter containing an e-mail to notify when the bundle cooking has ended.
+
 **  Vault walkthrough
 *** Checking progress
 #+BEAMER: \tiny
 #+BEGIN_SRC sh
 $ curl /api/1/vault/revision/608757ea.../gitfast
 #+END_SRC 
 # can we cook objects that aren't revisions? 
 
 *** Response
 #+BEAMER: \tiny
 #+BEGIN_SRC json
 {
   'fetch_url': '/api/1/vault/revision/608757ea.../gitfast/raw/',
   'progress_message': None, 
   'status': 'pending', 
   'id': 4, 
   'obj_id': '608757ea9bd8494d729732cc9a414948c160bd3c', 
   'obj_type': 'revision_gitfast'
 }
 #+END_SRC 
 
 *** What's your status?
 #+BEAMER: \small
-    - *new*: bundle requested for the object
-    - *pending*: bundle in preparation
-    - *failed* : the bundle cooking has failed
-    - *done*: bundle ready for download
+\tikzstyle{fail} = [draw, thin, fill=swh-red!80!swh-orange, minimum height=1.5em]
+\tikzstyle{processing} = [draw, thin, fill=swh-orange!100, minimum height=1.5em]
+\tikzstyle{success} = [draw, thin, fill=swh-green!80!swh-orange, minimum height=1.5em]
+
+\begin{figure}
+\begin{tikzpicture}[node distance=1.8cm, auto,>=latex', thick]
+    % We need to set at bounding box first. Otherwise the diagram
+    % will change position for each frame.
+    %\path[use as bounding box] (-1,0) rectangle (10,-2);
+    \path[->]<1-> node[processing] (new) {new}
+   node[processing, right of=new] (pending) {pending}
+   node[processing, right of=pending] (loading) {}
+   node[success, right of=loading] (done) {done}
+   node[fail, below of=loading] (failed) {failed}
+  (new) edge node {} (pending)
+  (pending) edge node {} (loading)
+  (loading) edge node {} (failed)
+  (loading) edge node {} (done);
+\end{tikzpicture}
+\end{figure}
 
 ** Vault walkthrough
 *** Checking progress
 #+BEAMER: \tiny
 #+BEGIN_SRC sh
 $ curl /api/1/vault/revision/608757ea.../gitfast
 #+END_SRC 
 
 *** Response
 #+BEAMER: \tiny
 #+BEGIN_SRC json
 {
   'fetch_url': '/api/1/vault/revision/608757ea.../gitfast/raw/',
   'progress_message': None, 
   'status': 'done', 
   'id': 4, 
   'obj_id': '608757ea9bd8494d729732cc9a414948c160bd3c', 
   'obj_type': 'revision_gitfast'
 }
 #+END_SRC 
 
 *** Download available when status is marked /done/
 #+BEAMER: \tiny
 #+BEGIN_SRC sh
 $ curl /api/1/vault/revision/608757ea.../gitfast/raw/ \
   -O path/to/revision.gitfast.gz
 
 $ git init
 $ zcat path/to/revision.gitfast.gz | git fast-import
 $ git checkout HEAD
 #+END_SRC