diff --git a/00-before-we-start.html b/00-before-we-start.html
index f45da310..ec9225ab 100644
--- a/00-before-we-start.html
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-      <a href="index.html">Summary and Setup</a>
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-    <!--/div.accordion-header-->
-  </div>
-  <!--/div.accordion-item-->
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-<!--/div.accordion-flush-->
+        <a href="index.html">Summary and Setup</a>
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+        
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 <div class="accordion accordion-flush" id="accordionFlushcurrent">
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-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
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diff --git a/01-intro-to-r.html b/01-intro-to-r.html
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-      <a href="index.html">Summary and Setup</a>
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-    <!--/div.accordion-header-->
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+        <a href="index.html">Summary and Setup</a>
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@@ -1610,6 +1608,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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   "@type": "TrainingMaterial",
   "@id": "https://librarycarpentry.github.io/lc-r/01-intro-to-r.html",
+  "inLanguage": "en",
   "dct:conformsTo": "https://bioschemas.org/profiles/TrainingMaterial/1.0-RELEASE",
   "description": "A Carpentries Lesson teaching foundational data and coding skills to researchers worldwide",
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diff --git a/02-starting-with-data.html b/02-starting-with-data.html
index 028d3a55..2697ac3b 100644
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                 <div class="accordion-body">
-                  <?xml version="1.0" encoding="UTF-8"?><div class="accordion accordion-flush" id="accordionFlush1">
+                  <div class="accordion accordion-flush" id="accordionFlush1">
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-      <a href="index.html">Summary and Setup</a>
-    </div>
-    <!--/div.accordion-header-->
-  </div>
-  <!--/div.accordion-item-->
-</div>
-<!--/div.accordion-flush-->
+        <a href="index.html">Summary and Setup</a>
+    </div><!--/div.accordion-header-->
+        
+  </div><!--/div.accordion-item-->
+</div><!--/div.accordion-flush-->
 
 <div class="accordion accordion-flush" id="accordionFlush2">
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 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li><p>Highest checkouts:
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+        <p>Built with <a href="https://github.com/carpentries/sandpaper/tree/0.16.2" class="external-link">sandpaper (0.16.2)</a>, <a href="https://github.com/carpentries/pegboard/tree/0.7.3" class="external-link">pegboard (0.7.3)</a>, and <a href="https://github.com/carpentries/varnish/tree/1.0.1" class="external-link">varnish (1.0.1)</a></p>
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   "@id": "https://librarycarpentry.github.io/lc-r/02-starting-with-data.html",
+  "inLanguage": "en",
   "dct:conformsTo": "https://bioschemas.org/profiles/TrainingMaterial/1.0-RELEASE",
   "description": "A Carpentries Lesson teaching foundational data and coding skills to researchers worldwide",
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   "dateCreated": "2019-05-30",
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 }
 
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diff --git a/03-data-cleaning-and-transformation.html b/03-data-cleaning-and-transformation.html
index 8d78cadd..7bc17b58 100644
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                 <div class="accordion-body">
-                  <?xml version="1.0" encoding="UTF-8"?><div class="accordion accordion-flush" id="accordionFlush1">
+                  <div class="accordion accordion-flush" id="accordionFlush1">
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-      <a href="index.html">Summary and Setup</a>
-    </div>
-    <!--/div.accordion-header-->
-  </div>
-  <!--/div.accordion-item-->
-</div>
-<!--/div.accordion-flush-->
+        <a href="index.html">Summary and Setup</a>
+    </div><!--/div.accordion-header-->
+        
+  </div><!--/div.accordion-item-->
+</div><!--/div.accordion-flush-->
 
 <div class="accordion accordion-flush" id="accordionFlush2">
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+        <p>Built with <a href="https://github.com/carpentries/sandpaper/tree/0.16.2" class="external-link">sandpaper (0.16.2)</a>, <a href="https://github.com/carpentries/pegboard/tree/0.7.3" class="external-link">pegboard (0.7.3)</a>, and <a href="https://github.com/carpentries/varnish/tree/1.0.1" class="external-link">varnish (1.0.1)</a></p>
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@@ -1294,6 +1292,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "@context": "https://schema.org",
   "@type": "TrainingMaterial",
   "@id": "https://librarycarpentry.github.io/lc-r/03-data-cleaning-and-transformation.html",
+  "inLanguage": "en",
   "dct:conformsTo": "https://bioschemas.org/profiles/TrainingMaterial/1.0-RELEASE",
   "description": "A Carpentries Lesson teaching foundational data and coding skills to researchers worldwide",
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 }
 
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diff --git a/04-data-viz-ggplot.html b/04-data-viz-ggplot.html
index 888a63d1..c6445644 100644
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                 <div class="accordion-body">
-                  <?xml version="1.0" encoding="UTF-8"?><div class="accordion accordion-flush" id="accordionFlush1">
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-      <a href="index.html">Summary and Setup</a>
-    </div>
-    <!--/div.accordion-header-->
-  </div>
-  <!--/div.accordion-item-->
-</div>
-<!--/div.accordion-flush-->
+        <a href="index.html">Summary and Setup</a>
+    </div><!--/div.accordion-header-->
+        
+  </div><!--/div.accordion-item-->
+</div><!--/div.accordion-flush-->
 
 <div class="accordion accordion-flush" id="accordionFlush2">
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         <p>Template licensed under <a href="https://creativecommons.org/licenses/by-sa/4.0/" class="external-link">CC-BY 4.0</a> by <a href="https://carpentries.org/" class="external-link">The Carpentries</a></p>
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   "@type": "TrainingMaterial",
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 }
 
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diff --git a/404.html b/404.html
index d51db9c6..494b45f8 100644
--- a/404.html
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     <div class="accordion-header" id="flush-heading1">
-      <a href="https://librarycarpentry.github.io/lc-r/index.html" class="external-link">Summary and Setup</a>
+        <a href="https://librarycarpentry.github.io/lc-r/index.html" class="external-link">Summary and Setup</a>
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+<!--/div.accordion-header-->
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   "@type": "TrainingMaterial",
   "@id": "https://librarycarpentry.github.io/lc-r/404.html",
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   "dct:conformsTo": "https://bioschemas.org/profiles/TrainingMaterial/1.0-RELEASE",
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   "dateCreated": "2019-05-30",
-  "dateModified": "2023-12-19",
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 }
 
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diff --git a/CODE_OF_CONDUCT.html b/CODE_OF_CONDUCT.html
index c71e2f80..9e90a81d 100644
--- a/CODE_OF_CONDUCT.html
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                 <div class="accordion-body">
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+                  <div class="accordion accordion-flush" id="accordionFlush1">
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+        <a href="index.html">Summary and Setup</a>
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 <div class="accordion accordion-flush" id="accordionFlush2">
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diff --git a/LICENSE.html b/LICENSE.html
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-      <a href="index.html">Summary and Setup</a>
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+<!--/div.accordion-header-->
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@@ -420,7 +421,7 @@ <h3 id="04-data-viz-ggplot-figure-28">Figure 28</h3>
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 <ol style="list-style-type: decimal"><li><p>Highest checkouts:
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+        <a href="index.html">Summary and Schedule</a>
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-      <a href="index.html">Summary and Schedule</a>
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+<!--/div.accordion-header-->
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+        <p>Built with <a href="https://github.com/carpentries/sandpaper/tree/0.16.2" class="external-link">sandpaper (0.16.2)</a>, <a href="https://github.com/carpentries/pegboard/tree/0.7.3" class="external-link">pegboard (0.7.3)</a>, and <a href="https://github.com/carpentries/varnish/tree/1.0.1" class="external-link">varnish (1.0.1)</a></p>
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   "@id": "https://librarycarpentry.github.io/lc-r/instructor/key-points.html",
+  "inLanguage": "en",
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   "description": "A Carpentries Lesson teaching foundational data and coding skills to researchers worldwide",
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-  "dateModified": "2023-12-19",
-  "datePublished": "2023-12-19"
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diff --git a/instructor/profiles.html b/instructor/profiles.html
index eb975ed5..c9597b70 100644
--- a/instructor/profiles.html
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@@ -135,16 +135,14 @@ <h2 class="accordion-header chapters" id="flush-headingEleven">
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-                  <?xml version="1.0" encoding="UTF-8"?><div class="accordion accordion-flush" id="accordionFlush1">
+                  <div class="accordion accordion-flush" id="accordionFlush1">
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-      <a href="index.html">Summary and Schedule</a>
-    </div>
-    <!--/div.accordion-header-->
-  </div>
-  <!--/div.accordion-item-->
-</div>
-<!--/div.accordion-flush-->
+        <a href="index.html">Summary and Schedule</a>
+    </div><!--/div.accordion-header-->
+        
+  </div><!--/div.accordion-item-->
+</div><!--/div.accordion-flush-->
 
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+        <p>Built with <a href="https://github.com/carpentries/sandpaper/tree/0.16.2" class="external-link">sandpaper (0.16.2)</a>, <a href="https://github.com/carpentries/pegboard/tree/0.7.3" class="external-link">pegboard (0.7.3)</a>, and <a href="https://github.com/carpentries/varnish/tree/1.0.1" class="external-link">varnish (1.0.1)</a></p>
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   "@context": "https://schema.org",
   "@type": "TrainingMaterial",
   "@id": "https://librarycarpentry.github.io/lc-r/instructor/profiles.html",
+  "inLanguage": "en",
   "dct:conformsTo": "https://bioschemas.org/profiles/TrainingMaterial/1.0-RELEASE",
   "description": "A Carpentries Lesson teaching foundational data and coding skills to researchers worldwide",
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   "identifier": "https://librarycarpentry.github.io/lc-r/instructor/profiles.html",
   "dateCreated": "2019-05-30",
-  "dateModified": "2023-12-19",
-  "datePublished": "2023-12-19"
+  "dateModified": "2023-12-26",
+  "datePublished": "2023-12-26"
 }
 
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diff --git a/instructor/reference.html b/instructor/reference.html
index b95f81a5..3d35f535 100644
--- a/instructor/reference.html
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                 <div class="accordion-body">
-                  <?xml version="1.0" encoding="UTF-8"?><div class="accordion accordion-flush" id="accordionFlush1">
+                  <div class="accordion accordion-flush" id="accordionFlush1">
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     <div class="accordion-header" id="flush-heading1">
-      <a href="index.html">Summary and Schedule</a>
-    </div>
-    <!--/div.accordion-header-->
-  </div>
-  <!--/div.accordion-item-->
-</div>
-<!--/div.accordion-flush-->
+        <a href="index.html">Summary and Schedule</a>
+    </div><!--/div.accordion-header-->
+        
+  </div><!--/div.accordion-item-->
+</div><!--/div.accordion-flush-->
 
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+        <p>Built with <a href="https://github.com/carpentries/sandpaper/tree/0.16.2" class="external-link">sandpaper (0.16.2)</a>, <a href="https://github.com/carpentries/pegboard/tree/0.7.3" class="external-link">pegboard (0.7.3)</a>, and <a href="https://github.com/carpentries/varnish/tree/1.0.1" class="external-link">varnish (1.0.1)</a></p>
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@@ -328,6 +326,7 @@ <h1>Glossary</h1>
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   "@type": "TrainingMaterial",
   "@id": "https://librarycarpentry.github.io/lc-r/instructor/reference.html",
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   "dct:conformsTo": "https://bioschemas.org/profiles/TrainingMaterial/1.0-RELEASE",
   "description": "A Carpentries Lesson teaching foundational data and coding skills to researchers worldwide",
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index fd2447bc..4c5150c7 100644
--- a/key-points.html
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                 <div class="accordion-body">
-                  <?xml version="1.0" encoding="UTF-8"?><div class="accordion accordion-flush" id="accordionFlush1">
+                  <div class="accordion accordion-flush" id="accordionFlush1">
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     <div class="accordion-header" id="flush-heading1">
-      <a href="index.html">Summary and Setup</a>
+        <a href="index.html">Summary and Setup</a>
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-    <!--/div.accordion-header-->
+<!--/div.accordion-header-->
+        
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@@ -366,7 +367,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
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+        <p>Built with <a href="https://github.com/carpentries/sandpaper/tree/0.16.2" class="external-link">sandpaper (0.16.2)</a>, <a href="https://github.com/carpentries/pegboard/tree/0.7.3" class="external-link">pegboard (0.7.3)</a>, and <a href="https://github.com/carpentries/varnish/tree/1.0.1" class="external-link">varnish (1.0.1)</a></p>
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@@ -380,6 +381,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
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   "@type": "TrainingMaterial",
   "@id": "https://librarycarpentry.github.io/lc-r/key-points.html",
+  "inLanguage": "en",
   "dct:conformsTo": "https://bioschemas.org/profiles/TrainingMaterial/1.0-RELEASE",
   "description": "A Carpentries Lesson teaching foundational data and coding skills to researchers worldwide",
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-  "dateModified": "2023-12-19",
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diff --git a/pkgdown.yml b/pkgdown.yml
index be6aa39d..310aed0b 100644
--- a/pkgdown.yml
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@@ -2,5 +2,5 @@ pandoc: 2.19.2
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+last_built: 2023-12-26T00:13Z
 
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index 8f79d669..eb122be3 100644
--- a/profiles.html
+++ b/profiles.html
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                 <div class="accordion-body">
-                  <?xml version="1.0" encoding="UTF-8"?><div class="accordion accordion-flush" id="accordionFlush1">
+                  <div class="accordion accordion-flush" id="accordionFlush1">
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     <div class="accordion-header" id="flush-heading1">
-      <a href="index.html">Summary and Setup</a>
-    </div>
-    <!--/div.accordion-header-->
-  </div>
-  <!--/div.accordion-item-->
-</div>
-<!--/div.accordion-flush-->
+        <a href="index.html">Summary and Setup</a>
+    </div><!--/div.accordion-header-->
+        
+  </div><!--/div.accordion-item-->
+</div><!--/div.accordion-flush-->
 
 <div class="accordion accordion-flush" id="accordionFlush2">
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         <p>Template licensed under <a href="https://creativecommons.org/licenses/by-sa/4.0/" class="external-link">CC-BY 4.0</a> by <a href="https://carpentries.org/" class="external-link">The Carpentries</a></p>
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+        <p>Built with <a href="https://github.com/carpentries/sandpaper/tree/0.16.2" class="external-link">sandpaper (0.16.2)</a>, <a href="https://github.com/carpentries/pegboard/tree/0.7.3" class="external-link">pegboard (0.7.3)</a>, and <a href="https://github.com/carpentries/varnish/tree/1.0.1" class="external-link">varnish (1.0.1)</a></p>
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@@ -271,6 +269,7 @@ <h1>Learner Profiles</h1>
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   "@type": "TrainingMaterial",
   "@id": "https://librarycarpentry.github.io/lc-r/profiles.html",
+  "inLanguage": "en",
   "dct:conformsTo": "https://bioschemas.org/profiles/TrainingMaterial/1.0-RELEASE",
   "description": "A Carpentries Lesson teaching foundational data and coding skills to researchers worldwide",
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   "identifier": "https://librarycarpentry.github.io/lc-r/profiles.html",
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-  "dateModified": "2023-12-19",
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 }
 
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diff --git a/reference.html b/reference.html
index d533befa..45b6b743 100644
--- a/reference.html
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                 <div class="accordion-body">
-                  <?xml version="1.0" encoding="UTF-8"?><div class="accordion accordion-flush" id="accordionFlush1">
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-    </div>
-    <!--/div.accordion-header-->
-  </div>
-  <!--/div.accordion-item-->
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-<!--/div.accordion-flush-->
+        <a href="index.html">Summary and Setup</a>
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 	<div id="to-top">
@@ -326,6 +324,7 @@ <h1>Glossary</h1>
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   "@type": "TrainingMaterial",
   "@id": "https://librarycarpentry.github.io/lc-r/reference.html",
+  "inLanguage": "en",
   "dct:conformsTo": "https://bioschemas.org/profiles/TrainingMaterial/1.0-RELEASE",
   "description": "A Carpentries Lesson teaching foundational data and coding skills to researchers worldwide",
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