diff --git a/articles/Random variable - Wikipedia/Random variable - Wikipedia.xopp.xml b/articles/Random variable - Wikipedia/Random variable - Wikipedia.xopp.xml
index dd74798..2286bc0 100644
--- a/articles/Random variable - Wikipedia/Random variable - Wikipedia.xopp.xml	
+++ b/articles/Random variable - Wikipedia/Random variable - Wikipedia.xopp.xml	
@@ -3,7 +3,29 @@
   <title>Xournal++ document - see https://github.com/xournalpp/xournalpp</title>
   <page width="596.00000000" height="842.00000000">
     <background type="pdf" domain="absolute" filename="/home/benjamin/Desktop/bens_folder/school/ens/asp/aria/internship/work/articles/Random variable - Wikipedia/Random variable - Wikipedia.pdf" pageno="1"/>
-    <layer/>
+    <layer>
+      <stroke tool="highlighter" color="#ffff007f" width="8.50000000" fill="128">156.74756721 117.81094363 524.12973811 117.81094363</stroke>
+      <stroke tool="highlighter" color="#00c0ff7f" width="8.50000000" fill="128">116.22969286 133.58385414 482.16790315 133.58385414</stroke>
+      <stroke tool="highlighter" color="#ffff007f" width="8.50000000" fill="128">138.12774039 147.14631526 550.22704226 147.14631526</stroke>
+      <stroke tool="highlighter" color="#ffff007f" width="8.50000000" fill="128">46.48995346 165.16665853 79.86923206 165.16665853</stroke>
+      <stroke tool="highlighter" color="#00c0ff7f" width="8.50000000" fill="128">101.21646597 164.66095177 342.03968542 164.66095177</stroke>
+      <stroke tool="highlighter" color="#ffff007f" width="8.50000000" fill="128">353.85909106 165.62561448 550.41254886 165.62561448</stroke>
+      <stroke tool="highlighter" color="#ffff007f" width="8.50000000" fill="128">45.74588400 181.58667469 206.45620951 181.58667469</stroke>
+      <stroke tool="highlighter" color="#00c0ff7f" width="8.50000000" fill="128">218.80727491 180.65622102 302.96257597 180.65622102</stroke>
+      <stroke tool="highlighter" color="#ffff007f" width="8.50000000" fill="128">312.92646653 180.65236906 402.37593635 180.65236906</stroke>
+      <stroke tool="highlighter" color="#00c0ff7f" width="8.50000000" fill="128">417.85997811 180.82914632 521.47860933 180.82914632</stroke>
+      <stroke tool="highlighter" color="#ffff007f" width="8.50000000" fill="128">535.87496075 180.16853590 549.92610464 180.16853590</stroke>
+      <stroke tool="highlighter" color="#ffff007f" width="8.50000000" fill="128">45.36510212 196.32240026 462.24262761 196.32240026</stroke>
+      <stroke tool="highlighter" color="#00c0ff7f" width="8.50000000" fill="128">476.27172320 197.35474733 551.07742966 197.35474733</stroke>
+      <stroke tool="highlighter" color="#00c0ff7f" width="8.50000000" fill="128">47.61819818 213.76045623 85.08686006 213.76045623</stroke>
+      <text font="Sans" size="11.00000000" x="552.86063001" y="296.57635174" color="#00c0ffff" ts="0" fn="">?</text>
+      <stroke tool="pen" ts="0" fn="" color="#00c0ffff" width="1.41000000">410.25508048 259.40142266 412.95342022 262.32893178</stroke>
+      <stroke tool="pen" ts="0" fn="" color="#00c0ffff" width="1.41000000">412.95342022 262.32893178 419.04843972 251.77204832</stroke>
+      <stroke tool="highlighter" color="#ffff007f" width="8.50000000" fill="128">501.20857121 373.30116623 533.92212951 373.30116623</stroke>
+      <stroke tool="highlighter" color="#ffff007f" width="8.50000000" fill="128">388.00605664 386.87718802 528.29333358 386.87718802</stroke>
+      <stroke tool="highlighter" color="#ffff007f" width="8.50000000" fill="128">387.52979210 401.45513897 510.22110362 401.45513897</stroke>
+      <stroke tool="highlighter" color="#ffff007f" width="8.50000000" fill="128">389.34620677 417.24878293 419.19855208 417.24878293</stroke>
+    </layer>
   </page>
   <page width="596.00000000" height="842.00000000">
     <background type="pdf" pageno="2"/>