diff --git a/index.html b/index.html
index 54ea4c2..fd3874d 100644
--- a/index.html
+++ b/index.html
@@ -3,13 +3,14 @@
 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
 <head>
-<!-- 2021-04-08 jeu. 11:47 -->
+<!-- 2021-05-02 dim. 00:13 -->
 <meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
 <title>Research Pages</title>
 <meta name="author" content="Thomas Dehaeze" />
 <meta name="generator" content="Org Mode" />
 <link rel="stylesheet" type="text/css" href="css/style.css"/>
 <script type="text/javascript" src="js/script.js"></script>
+<script defer src="https://commento.tdehaeze.xyz/js/commento.js"></script>
 <style> #content {margin: auto;} </style>
 <script>
            MathJax = {
@@ -36,12 +37,12 @@
 Welcome to my research pages.
 </p>
 
-<div id="outline-container-org9f0e536" class="outline-2">
-<h2 id="org9f0e536"><span class="section-number-2">1</span> Papers</h2>
+<div id="outline-container-org93e9c93" class="outline-2">
+<h2 id="org93e9c93"><span class="section-number-2">1</span> Papers</h2>
 <div class="outline-text-2" id="text-1">
 </div>
-<div id="outline-container-org8ad3ac4" class="outline-3">
-<h3 id="org8ad3ac4"><span class="section-number-3">1.1</span> Conference Papers</h3>
+<div id="outline-container-orgc627deb" class="outline-3">
+<h3 id="orgc627deb"><span class="section-number-3">1.1</span> Conference Papers</h3>
 <div class="outline-text-3" id="text-1-1">
 <ul class="org-ul">
 <li>Dehaeze, T., Mattenet, M. M., &amp; Collette, C., <b>Sample Stabilization For Tomography Experiments In Presence Of Large Plant Uncertainty</b>, In MEDSI&rsquo;18 (pp. 153–157) (2018). Geneva, Switzerland: JACoW Publishing. (<a href="dehaeze18_sampl_stabil_for_tomog_exper/index.html">link</a>)</li>
@@ -51,8 +52,8 @@ Welcome to my research pages.
 </div>
 </div>
 
-<div id="outline-container-org653e50e" class="outline-3">
-<h3 id="org653e50e"><span class="section-number-3">1.2</span> Journal Papers</h3>
+<div id="outline-container-org274c54f" class="outline-3">
+<h3 id="org274c54f"><span class="section-number-3">1.2</span> Journal Papers</h3>
 <div class="outline-text-3" id="text-1-2">
 <ul class="org-ul">
 <li>Verma, M., Dehaeze, T., Zhao, G., Watchi, J., &amp; Collette, C., <b>Virtual sensor fusion for high precision control, Mechanical Systems and Signal Processing</b>, 150, 107241 (2020). <a href="http://dx.doi.org/10.1016/j.ymssp.2020.107241">http://dx.doi.org/10.1016/j.ymssp.2020.107241</a> (<a href="personnal-papers/verma20_virtual_sensor_fusion_high_precis_contr.pdf">pdf</a>)</li>
@@ -63,12 +64,12 @@ Welcome to my research pages.
 </div>
 </div>
 
-<div id="outline-container-org63f6682" class="outline-2">
-<h2 id="org63f6682"><span class="section-number-2">2</span> Useful Pages / Tutorials</h2>
+<div id="outline-container-org8e363d7" class="outline-2">
+<h2 id="org8e363d7"><span class="section-number-2">2</span> Useful Pages / Tutorials</h2>
 <div class="outline-text-2" id="text-2">
 </div>
-<div id="outline-container-orgd622ba9" class="outline-3">
-<h3 id="orgd622ba9"><span class="section-number-3">2.1</span> General Mechatronics</h3>
+<div id="outline-container-org67f411d" class="outline-3">
+<h3 id="org67f411d"><span class="section-number-3">2.1</span> General Mechatronics</h3>
 <div class="outline-text-3" id="text-2-1">
 <p>
 <a href="spectral-analysis/index.html">Spectral Analysis</a>
@@ -97,8 +98,8 @@ Several types of linear filters (low pass, high pass, notch, lead, etc.) are pre
 </div>
 </div>
 
-<div id="outline-container-orga87decf" class="outline-3">
-<h3 id="orga87decf"><span class="section-number-3">2.2</span> System Modeling using Simscape</h3>
+<div id="outline-container-org7f5dcb8" class="outline-3">
+<h3 id="org7f5dcb8"><span class="section-number-3">2.2</span> System Modeling using Simscape</h3>
 <div class="outline-text-3" id="text-2-2">
 <p>
 <a href="simscape-fem/index.html">Finite Element Models with Simscape</a>
@@ -132,12 +133,12 @@ In order to start the simulation at equilibrium, few measured can be employed th
 </div>
 </div>
 
-<div id="outline-container-org802969d" class="outline-2">
-<h2 id="org802969d"><span class="section-number-2">3</span> Test Benches / Experiments</h2>
+<div id="outline-container-orge708c36" class="outline-2">
+<h2 id="orge708c36"><span class="section-number-2">3</span> Test Benches / Experiments</h2>
 <div class="outline-text-2" id="text-3">
 </div>
-<div id="outline-container-orgd2ef9b8" class="outline-3">
-<h3 id="orgd2ef9b8"><span class="section-number-3">3.1</span> Intrumentation Related</h3>
+<div id="outline-container-org67953ce" class="outline-3">
+<h3 id="org67953ce"><span class="section-number-3">3.1</span> Intrumentation Related</h3>
 <div class="outline-text-3" id="text-3-1">
 <p>
 <a href="test-bench-piezo-amplifiers/index.html">Voltage Amplifiers for Piezoelectric Actuators</a>
@@ -161,8 +162,8 @@ Its noise characteristics as well as non-linearities are measured.
 </div>
 </div>
 
-<div id="outline-container-org0feb497" class="outline-3">
-<h3 id="org0feb497"><span class="section-number-3">3.2</span> Amplified Piezoelecric Actuator</h3>
+<div id="outline-container-org32b753e" class="outline-3">
+<h3 id="org32b753e"><span class="section-number-3">3.2</span> Amplified Piezoelecric Actuator</h3>
 <div class="outline-text-3" id="text-3-2">
 <p>
 <a href="test-bench-apa/index.html">Amplified Piezoelectric Actuator - Test bench and Finite Element Model</a>
@@ -207,8 +208,8 @@ The goal is to form a <i>super sensor</i> that has better noise characteristics
 </div>
 </div>
 
-<div id="outline-container-org0699db6" class="outline-3">
-<h3 id="org0699db6"><span class="section-number-3">3.3</span> Vibration Table</h3>
+<div id="outline-container-orgcf2a353" class="outline-3">
+<h3 id="orgcf2a353"><span class="section-number-3">3.3</span> Vibration Table</h3>
 <div class="outline-text-3" id="text-3-3">
 <p>
 <a href="vibration-table/index.html">Instrumented Vibration Table used for Modal Testing</a>
@@ -222,12 +223,12 @@ A vibration table is developed to perform controlled modal tests.
 </div>
 </div>
 
-<div id="outline-container-org265fed7" class="outline-2">
-<h2 id="org265fed7"><span class="section-number-2">4</span> PhD Project - Nano Active Stabilization System</h2>
+<div id="outline-container-org5fba9e6" class="outline-2">
+<h2 id="org5fba9e6"><span class="section-number-2">4</span> PhD Project - Nano Active Stabilization System</h2>
 <div class="outline-text-2" id="text-4">
 </div>
-<div id="outline-container-org541bac7" class="outline-3">
-<h3 id="org541bac7"><span class="section-number-3">4.1</span> General Reports</h3>
+<div id="outline-container-orgdccf8f3" class="outline-3">
+<h3 id="orgdccf8f3"><span class="section-number-3">4.1</span> General Reports</h3>
 <div class="outline-text-3" id="text-4-1">
 <p>
 <a href="nass-report-2020/index.html">NASS - Report 2020</a>
@@ -240,8 +241,8 @@ General report on the NASS project made in 2020.
 </div>
 </div>
 
-<div id="outline-container-orgf240b2f" class="outline-3">
-<h3 id="orgf240b2f"><span class="section-number-3">4.2</span> Measurements, Models and Test Benches</h3>
+<div id="outline-container-org2d7d464" class="outline-3">
+<h3 id="org2d7d464"><span class="section-number-3">4.2</span> Measurements, Models and Test Benches</h3>
 <div class="outline-text-3" id="text-4-2">
 <p>
 <a href="nass-micro-station-measurements/index.html">NASS - Micro Station Measurements</a>
@@ -292,8 +293,8 @@ Presentation of the short stroke metrology concept.
 </div>
 </div>
 
-<div id="outline-container-orge8df6c1" class="outline-3">
-<h3 id="orge8df6c1"><span class="section-number-3">4.3</span> Nano-Hexapod</h3>
+<div id="outline-container-orgec1da5a" class="outline-3">
+<h3 id="orgec1da5a"><span class="section-number-3">4.3</span> Nano-Hexapod</h3>
 <div class="outline-text-3" id="text-4-3">
 <p>
 <b>Equipments</b>:
@@ -326,8 +327,8 @@ Presentation of the short stroke metrology concept.
 </div>
 </div>
 
-<div id="outline-container-orgd41b7ae" class="outline-2">
-<h2 id="orgd41b7ae"><span class="section-number-2">5</span> Notes</h2>
+<div id="outline-container-org7b5a9aa" class="outline-2">
+<h2 id="org7b5a9aa"><span class="section-number-2">5</span> Notes</h2>
 <div class="outline-text-2" id="text-5">
 <ul class="org-ul">
 <li><a href="euspen_2020_notes/notes.html">EUSPEN - 2020 - Notes</a></li>
@@ -335,14 +336,21 @@ Presentation of the short stroke metrology concept.
 </div>
 </div>
 
-<div id="outline-container-org2ac34c1" class="outline-2">
-<h2 id="org2ac34c1"><span class="section-number-2">6</span> Lectures</h2>
+<div id="outline-container-org72bb47e" class="outline-2">
+<h2 id="org72bb47e"><span class="section-number-2">6</span> Lectures</h2>
 <div class="outline-text-2" id="text-6">
 <ul class="org-ul">
 <li><a href="lecture-h-infinity/index.html">H-Infinity - Robust Control</a></li>
 </ul>
 </div>
 </div>
+
+<div id="outline-container-org6faa92a" class="outline-2">
+<h2 id="org6faa92a"><span class="section-number-2">7</span> Test</h2>
+<div class="outline-text-2" id="text-7">
+<div id="commento"></div>
+</div>
+</div>
 </div>
 </body>
 </html>
diff --git a/index.org b/index.org
index 046d360..dcf33e2 100644
--- a/index.org
+++ b/index.org
@@ -5,6 +5,7 @@
 
 #+HTML_HEAD: <link rel="stylesheet" type="text/css" href="css/style.css"/>
 #+HTML_HEAD: <script type="text/javascript" src="js/script.js"></script>
+#+HTML_HEAD: <script defer src="https://commento.tdehaeze.xyz/js/commento.js"></script>
 #+HTML_HEAD: <style> #content {margin: auto;} </style>
 :END:
 
@@ -198,3 +199,8 @@ Presentation of the short stroke metrology concept.
 
 * Lectures
 - [[file:lecture-h-infinity/index.org][H-Infinity - Robust Control]]
+
+* Test
+#+begin_export html
+<div id="commento"></div>
+#+end_export
