diff --git a/command-line/css/print.css b/command-line/css/print.css
index d8203b5..042575d 100644
--- a/command-line/css/print.css
+++ b/command-line/css/print.css
@@ -86,8 +86,8 @@ body{
     letter-spacing: 0.01em;
     /*hyphens: auto;*/
     /*-webkit-hyphenate-limit-chars: 8 2 4;*/ /* word length, minimum number of characters before and after the hyphen -- does not work in chrome */
-    orphans: 0; /* Default is 2. These might trigger disappearing sentences at pagebreak? https://mattermost.pagedmedia.org/pagedmedia/pl/xsetebgcbbddzggwbbn93e5k1a */
-    widows: 0; /* Default is 2. These might trigger disappearing sentences at pagebreak? https://mattermost.pagedmedia.org/pagedmedia/pl/xsetebgcbbddzggwbbn93e5k1a */
+    orphans: 0 !important; /* Default is 2. These might trigger disappearing sentences at pagebreak? https://mattermost.pagedmedia.org/pagedmedia/pl/xsetebgcbbddzggwbbn93e5k1a */
+    widows: 0 !important; /* Default is 2. These might trigger disappearing sentences at pagebreak? https://mattermost.pagedmedia.org/pagedmedia/pl/xsetebgcbbddzggwbbn93e5k1a */
 }
 
 @page{
@@ -97,7 +97,7 @@ body{
     /*size: 576px 864px;*/
     size: 152mm 229mm; 
     bleed: 3mm; 
-    marks: crop;
+    /*marks: crop;*/
 
     @bottom-center{
         content: counter(page);
@@ -109,13 +109,17 @@ body{
     /*margin: 55px 18mm 80px 29.125mm;*/
     /*margin: 14.758mm 18mm 21.225mm 29.125mm;*/
     /* --- new margins after final trim size is 0.4mm less wide --- */
-    margin: 55px 17.8mm 80px 28.975mm;
+    /*margin: 55px 17.8mm 80px 28.975mm;*/
+    /* --- missing sentences debugging margins --- */
+    margin: 55px 17.8mm 73px 28.975mm;
 }
 @page:left{
     /*margin: 55px 29.125mm 80px 18mm;*/
     /*margin: 14.758mm 29.125mm 21.225mm 18mm;*/
     /* --- new margins after final trim size is 0.4mm less wide --- */
-    margin: 55px 28.975mm 80px 17.8mm;
+    /*margin: 55px 28.975mm 80px 17.8mm;*/
+    /* --- missing sentences debugging margins --- */
+    margin: 55px 28.975mm 73px 17.8mm;
 }
 @page:right{
     /* running header: contribution title (taken from the h2 of the contribution) */
@@ -1053,7 +1057,7 @@ pre{
     hyphens: none;
     white-space: pre-line; 
     margin: calc(var(--line-height) - 1px) 0 calc(var(--line-height) - 1px) var(--second-indent);
-    border: 1px solid rgba(0,0,0,0.2);
+    border: 1px solid rgb(220,220,220);
     padding: calc(var(--line-height) / 2) var(--line-height);
     page-break-inside: avoid;
 }
diff --git a/command-line/screenshots/uncaught-typeerror-cannot-read-the-property-of-null.png b/command-line/screenshots/uncaught-typeerror-cannot-read-the-property-of-null.png
new file mode 100644
index 0000000..4a3c2ba
Binary files /dev/null and b/command-line/screenshots/uncaught-typeerror-cannot-read-the-property-of-null.png differ
diff --git a/command-line/update.py b/command-line/update.py
index 447e475..611b96b 100644
--- a/command-line/update.py
+++ b/command-line/update.py
@@ -174,7 +174,6 @@ def tweaking(html):
 	html = html.replace('<h2><span class="mw-headline" id="The_Industrial_Continuum_of_3D">The Industrial Continuum of 3D</span><span class="mw-editsection"><span class="mw-editsection-bracket"></span></span></h2>', '<h2><span class="mw-headline" id="The_Industrial_Continuum_of_3D">The Industrial Continuum<br>of 3D</span><span class="mw-editsection"><span class="mw-editsection-bracket"></span></span></h2>') 
 	html = html.replace('<h1><span class="mw-headline" id="Depths_and_Densities:_Accidented_and_dissonant_spacetimes"><a href="#Depths_and_densities" title="Depths and densities">Depths and Densities: Accidented and dissonant spacetimes</a></span><span class="mw-editsection"><span class="mw-editsection-bracket"></span></span></h1>', '<h1><span class="mw-headline" id="Depths_and_Densities:_Accidented_and_dissonant_spacetimes"><a href="#Depths_and_densities" title="Depths and densities">Depths and Densities:<br>Accidented<br>and dissonant<br>spacetimes</a></span><span class="mw-editsection"><span class="mw-editsection-bracket"></span></span></h1>') 
 	html = html.replace('<h2><span class="mw-headline" id="Open_Boundary_Conditions:_a_grid_for_intensive_study">Open Boundary Conditions: a grid for intensive study</span><span class="mw-editsection"><span class="mw-editsection-bracket"></span></span></h2>', '<h2><span class="mw-headline" id="Open_Boundary_Conditions:_a_grid_for_intensive_study">Open Boundary Conditions:<br>a grid for intensive study</span><span class="mw-editsection"><span class="mw-editsection-bracket"></span></span></h2>') 
-
 	html = html.replace('T*fRP', 'T✶fRP') 
 	html = html.replace('trans*', 'trans✶') 
 	html = html.replace('Trans*', 'trans✶') 
@@ -219,6 +218,9 @@ def tweaking(html):
 	# 	print(match)
 	# 	html = html.replace(match, f'{ match }<wbr>')
 
+	html = html.replace('.png', '.jpg') # Using only jpg version of the images, June 2022
+	html = html.replace('.gif', '.jpg') # Using only jpg version of the images, June 2022
+
 	return html
 
 def clean_up(html):