diff --git a/404.html b/404.html
index 655eb55..0fbd9a0 100644
--- a/404.html
+++ b/404.html
@@ -263,8 +263,8 @@ <h1>Page not found</h1>
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   "identifier": "https://astroDimitrios.github.io/intro-to-modern-fortran/404.html",
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-  "dateModified": "2024-01-09",
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+  "dateModified": "2024-01-16",
+  "datePublished": "2024-01-16"
 }
 
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diff --git a/CODE_OF_CONDUCT.html b/CODE_OF_CONDUCT.html
index 9cd7063..014054b 100644
--- a/CODE_OF_CONDUCT.html
+++ b/CODE_OF_CONDUCT.html
@@ -295,7 +295,7 @@ <h1>Contributor Code of Conduct</h1>
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   "dateCreated": "2023-08-04",
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-  "datePublished": "2024-01-09"
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diff --git a/LICENSE.html b/LICENSE.html
index 8af3427..c20b613 100644
--- a/LICENSE.html
+++ b/LICENSE.html
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   "dateCreated": "2023-08-04",
   "dateModified": "2023-11-21",
-  "datePublished": "2024-01-09"
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diff --git a/aio.html b/aio.html
index a581a50..dee99aa 100644
--- a/aio.html
+++ b/aio.html
@@ -318,7 +318,7 @@ <h3 class="callout-title">Compiling your first program<a class="anchor" aria-lab
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-<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">
 <p>Using <code>ftn</code>:</p>
 <pre class="shell"><code>$ something something something</code></pre>
@@ -488,7 +488,7 @@ <h3 class="callout-title">Writing your first program<a class="anchor" aria-label
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-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>A version of this program is available as
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@@ -565,8 +565,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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diff --git a/images.html b/images.html
index 4bb8843..c121d94 100644
--- a/images.html
+++ b/images.html
@@ -293,8 +293,8 @@ <h2 class="accordion-header" id="flush-headingTwelve">
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-  "dateModified": "2024-01-09",
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diff --git a/index.html b/index.html
index b4b9cbf..212a16a 100644
--- a/index.html
+++ b/index.html
@@ -383,8 +383,8 @@ <h4 class="accordion-header" id="headingSolution2">GFortran</h4>
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   "dateCreated": "2023-08-04",
-  "dateModified": "2024-01-09",
-  "datePublished": "2024-01-09"
+  "dateModified": "2024-01-16",
+  "datePublished": "2024-01-16"
 }
 
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diff --git a/instructor-notes.html b/instructor-notes.html
index 28527fe..b3dce44 100644
--- a/instructor-notes.html
+++ b/instructor-notes.html
@@ -300,8 +300,8 @@ <h1>Instructor Notes</h1>
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   "dateCreated": "2023-08-04",
-  "dateModified": "2024-01-09",
-  "datePublished": "2024-01-09"
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diff --git a/instructor/404.html b/instructor/404.html
index 6772a9d..784f90a 100644
--- a/instructor/404.html
+++ b/instructor/404.html
@@ -263,8 +263,8 @@ <h1>Page not found</h1>
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   "dateCreated": "2023-08-04",
-  "dateModified": "2024-01-09",
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diff --git a/instructor/CODE_OF_CONDUCT.html b/instructor/CODE_OF_CONDUCT.html
index 6d217e1..c197156 100644
--- a/instructor/CODE_OF_CONDUCT.html
+++ b/instructor/CODE_OF_CONDUCT.html
@@ -297,7 +297,7 @@ <h1>Contributor Code of Conduct</h1>
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-  "datePublished": "2024-01-09"
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diff --git a/instructor/LICENSE.html b/instructor/LICENSE.html
index 9d2354c..da71c60 100644
--- a/instructor/LICENSE.html
+++ b/instructor/LICENSE.html
@@ -348,7 +348,7 @@ <h1>Licenses</h1>
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   "dateCreated": "2023-08-04",
   "dateModified": "2023-11-21",
-  "datePublished": "2024-01-09"
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diff --git a/instructor/aio.html b/instructor/aio.html
index f2f8878..fba6910 100644
--- a/instructor/aio.html
+++ b/instructor/aio.html
@@ -321,7 +321,7 @@ <h3 class="callout-title">Compiling your first program<a class="anchor" aria-lab
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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">
 <p>Using <code>ftn</code>:</p>
 <pre class="shell"><code>$ something something something</code></pre>
@@ -491,7 +491,7 @@ <h3 class="callout-title">Writing your first program<a class="anchor" aria-label
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>A version of this program is available as
 <code>exercise1.f90</code>.</p>
@@ -568,8 +568,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://astroDimitrios.github.io/intro-to-modern-fortran/instructor/aio.html",
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   "dateCreated": "2023-08-04",
-  "dateModified": "2024-01-09",
-  "datePublished": "2024-01-09"
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 }
 
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diff --git a/instructor/images.html b/instructor/images.html
index 7565a2d..4ea4b1c 100644
--- a/instructor/images.html
+++ b/instructor/images.html
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   "dateCreated": "2023-08-04",
-  "dateModified": "2024-01-09",
-  "datePublished": "2024-01-09"
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diff --git a/instructor/index.html b/instructor/index.html
index aba3e29..702d6f0 100644
--- a/instructor/index.html
+++ b/instructor/index.html
@@ -399,8 +399,8 @@ <h4 class="accordion-header" id="headingSolution2">GFortran</h4>
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   "dateCreated": "2023-08-04",
-  "dateModified": "2024-01-09",
-  "datePublished": "2024-01-09"
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diff --git a/instructor/instructor-notes.html b/instructor/instructor-notes.html
index 02c8780..538a3d5 100644
--- a/instructor/instructor-notes.html
+++ b/instructor/instructor-notes.html
@@ -303,8 +303,8 @@ <h1>Instructor Notes</h1>
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   "dateCreated": "2023-08-04",
-  "dateModified": "2024-01-09",
-  "datePublished": "2024-01-09"
+  "dateModified": "2024-01-16",
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   </script><script>
diff --git a/instructor/introduction.html b/instructor/introduction.html
index 1ea5bd7..d013e67 100644
--- a/instructor/introduction.html
+++ b/instructor/introduction.html
@@ -300,7 +300,7 @@ <h3 class="callout-title">Compiling your first program<a class="anchor" aria-lab
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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">
 <p>Using <code>ftn</code>:</p>
 <pre class="shell"><code>$ something something something</code></pre>
@@ -464,7 +464,7 @@ <h3 class="callout-title">Writing your first program<a class="anchor" aria-label
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>A version of this program is available as
 <code>exercise1.f90</code>.</p>
@@ -550,7 +550,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://astroDimitrios.github.io/intro-to-modern-fortran/instructor/introduction.html",
   "dateCreated": "2023-08-04",
   "dateModified": "2023-11-21",
-  "datePublished": "2024-01-09"
+  "datePublished": "2024-01-16"
 }
 
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diff --git a/instructor/key-points.html b/instructor/key-points.html
index 61cfa54..fcea735 100644
--- a/instructor/key-points.html
+++ b/instructor/key-points.html
@@ -301,8 +301,8 @@ <h2 class="accordion-header" id="flush-headingTwelve">
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   "dateCreated": "2023-08-04",
-  "dateModified": "2024-01-09",
-  "datePublished": "2024-01-09"
+  "dateModified": "2024-01-16",
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diff --git a/instructor/profiles.html b/instructor/profiles.html
index 3eb6ca9..e2ff387 100644
--- a/instructor/profiles.html
+++ b/instructor/profiles.html
@@ -248,8 +248,8 @@ <h1>Learner Profiles</h1>
   "url": "https://astroDimitrios.github.io/intro-to-modern-fortran/instructor/profiles.html",
   "identifier": "https://astroDimitrios.github.io/intro-to-modern-fortran/instructor/profiles.html",
   "dateCreated": "2023-08-04",
-  "dateModified": "2024-01-09",
-  "datePublished": "2024-01-09"
+  "dateModified": "2024-01-16",
+  "datePublished": "2024-01-16"
 }
 
   </script><script>
diff --git a/instructor/reference.html b/instructor/reference.html
index 28f0fcd..b2c59e3 100644
--- a/instructor/reference.html
+++ b/instructor/reference.html
@@ -290,7 +290,7 @@ <h1>Reference</h1>
   "identifier": "https://astroDimitrios.github.io/intro-to-modern-fortran/instructor/reference.html",
   "dateCreated": "2023-08-04",
   "dateModified": "2023-11-21",
-  "datePublished": "2024-01-09"
+  "datePublished": "2024-01-16"
 }
 
   </script><script>
diff --git a/introduction.html b/introduction.html
index 6c74429..51f71fd 100644
--- a/introduction.html
+++ b/introduction.html
@@ -298,7 +298,7 @@ <h3 class="callout-title">Compiling your first program<a class="anchor" aria-lab
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </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">
 <p>Using <code>ftn</code>:</p>
 <pre class="shell"><code>$ something something something</code></pre>
@@ -462,7 +462,7 @@ <h3 class="callout-title">Writing your first program<a class="anchor" aria-label
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>A version of this program is available as
 <code>exercise1.f90</code>.</p>
@@ -548,7 +548,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://astroDimitrios.github.io/intro-to-modern-fortran/introduction.html",
   "dateCreated": "2023-08-04",
   "dateModified": "2023-11-21",
-  "datePublished": "2024-01-09"
+  "datePublished": "2024-01-16"
 }
 
   </script><script>
diff --git a/key-points.html b/key-points.html
index fa3c3af..b27c7d4 100644
--- a/key-points.html
+++ b/key-points.html
@@ -299,8 +299,8 @@ <h2 class="accordion-header" id="flush-headingTwelve">
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   "dateCreated": "2023-08-04",
-  "dateModified": "2024-01-09",
-  "datePublished": "2024-01-09"
+  "dateModified": "2024-01-16",
+  "datePublished": "2024-01-16"
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diff --git a/pkgdown.yml b/pkgdown.yml
index 6a38abc..601396b 100644
--- a/pkgdown.yml
+++ b/pkgdown.yml
@@ -2,5 +2,5 @@ pandoc: 2.19.2
 pkgdown: 2.0.7
 pkgdown_sha: ~
 articles: {}
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+last_built: 2024-01-16T00:47Z
 
diff --git a/profiles.html b/profiles.html
index 3e137bd..b4acd94 100644
--- a/profiles.html
+++ b/profiles.html
@@ -248,8 +248,8 @@ <h1>Learner Profiles</h1>
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   "dateCreated": "2023-08-04",
-  "dateModified": "2024-01-09",
-  "datePublished": "2024-01-09"
+  "dateModified": "2024-01-16",
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 }
 
   </script><script>
diff --git a/reference.html b/reference.html
index 3154e45..26f95d0 100644
--- a/reference.html
+++ b/reference.html
@@ -288,7 +288,7 @@ <h1>Reference</h1>
   "identifier": "https://astroDimitrios.github.io/intro-to-modern-fortran/reference.html",
   "dateCreated": "2023-08-04",
   "dateModified": "2023-11-21",
-  "datePublished": "2024-01-09"
+  "datePublished": "2024-01-16"
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   </script><script>