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diff --git a/05-loops.html b/05-loops.html
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 <p>The body of the loop is executed 6 times.</p>
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 <p>C gets printed because the first two conditions,
 <code>4 &gt; 5</code> and <code>4 == 5</code>, are not true, but
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 <p>There is a <a href="https://docs.python.org/3/library/functions.html#abs" class="external-link">built-in
 function <code>abs</code></a> that returns the absolute value of a
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 </button>
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+<div id="collapseSolution12" class="accordion-collapse collapse" aria-labelledby="headingSolution12" data-bs-parent="#accordionSolution12">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li>Write a loop that counts the number of vowels in a character
 string.</li>
diff --git a/07-functions.html b/07-functions.html
index 10d1c22c..87e81fbf 100644
--- a/07-functions.html
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 <p>Python will first execute the function <code>add</code> with
 <code>a = 7</code> and <code>b = 3</code>, and, therefore, print
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 <p>Attempting to define the <code>numbers</code> function results in
 <code>4. SyntaxError</code>. The defined parameters <code>two</code> and
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 <p>The body of the loop is executed 6 times.</p>
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 <p>C gets printed because the first two conditions,
 <code>4 &gt; 5</code> and <code>4 == 5</code>, are not true, but
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 <p>There is a <a href="https://docs.python.org/3/library/functions.html#abs" class="external-link">built-in
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 <ol style="list-style-type: decimal">
 <li>Write a loop that counts the number of vowels in a character
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 <p>Python will first execute the function <code>add</code> with
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 <p>Attempting to define the <code>numbers</code> function results in
 <code>4. SyntaxError</code>. The defined parameters <code>two</code> and
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diff --git a/instructor/05-loops.html b/instructor/05-loops.html
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 <p>The body of the loop is executed 6 times.</p>
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 <p>C gets printed because the first two conditions,
 <code>4 &gt; 5</code> and <code>4 == 5</code>, are not true, but
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 <p>There is a <a href="https://docs.python.org/3/library/functions.html#abs" class="external-link">built-in
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@@ -1328,7 +1328,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
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 </button>
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 <div class="accordion-body">
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 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution11" aria-expanded="false" aria-controls="collapseSolution11">
   <h4 class="accordion-header" id="headingSolution11"> Show me the solution </h4>
 </button>
-<div id="collapseSolution11" class="accordion-collapse collapse" data-bs-parent="#accordionSolution11" aria-labelledby="headingSolution11">
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 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb65">
 <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1451,7 +1451,7 @@ <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"><
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution12" aria-expanded="false" aria-controls="collapseSolution12">
   <h4 class="accordion-header" id="headingSolution12"> Counting Vowels </h4>
 </button>
-<div id="collapseSolution12" class="accordion-collapse collapse" data-bs-parent="#accordionSolution12" aria-labelledby="headingSolution12">
+<div id="collapseSolution12" class="accordion-collapse collapse" aria-labelledby="headingSolution12" data-bs-parent="#accordionSolution12">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li>Write a loop that counts the number of vowels in a character
 string.</li>
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 </button>
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 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>Python will first execute the function <code>add</code> with
 <code>a = 7</code> and <code>b = 3</code>, and, therefore, print
@@ -1126,7 +1126,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
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 </button>
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@@ -1159,7 +1159,7 @@ <h3 class="callout-title">Rescaling an Array<a class="anchor" aria-label="anchor
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
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 </button>
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@@ -1195,7 +1195,7 @@ <h3 class="callout-title">Testing and Documenting Your Function<a class="anchor"
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 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
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 </button>
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 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution7" aria-expanded="false" aria-controls="collapseSolution7">
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 </button>
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 <div class="accordion-body">
 <div class="codewrapper">
 <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1357,7 +1357,7 @@ <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"><
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution8" aria-expanded="false" aria-controls="collapseSolution8">
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 </button>
-<div id="collapseSolution8" class="accordion-collapse collapse" aria-labelledby="headingSolution8" data-bs-parent="#accordionSolution8">
+<div id="collapseSolution8" class="accordion-collapse collapse" data-bs-parent="#accordionSolution8" aria-labelledby="headingSolution8">
 <div class="accordion-body">
 <p>Attempting to define the <code>numbers</code> function results in
 <code>4. SyntaxError</code>. The defined parameters <code>two</code> and
diff --git a/instructor/aio.html b/instructor/aio.html
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--- a/instructor/aio.html
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   <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">
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 <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -976,7 +976,7 @@ <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"><
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
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 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
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 <div class="accordion-body">
 <div class="codewrapper">
 <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1011,7 +1011,7 @@ <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"><
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
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 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
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 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
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@@ -2526,7 +2526,7 @@ <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"><
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
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 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
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 <div class="accordion-body">
 <p>The body of the loop is executed 6 times.</p>
 </div>
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 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
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 </button>
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@@ -2595,7 +2595,7 @@ <h3 class="callout-title">Summing a List<a class="anchor" aria-label="anchor" hr
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4"> Show me the solution </h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
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@@ -2658,7 +2658,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
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 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
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 </button>
-<div id="collapseSolution6" class="accordion-collapse collapse" data-bs-parent="#accordionSolution6" aria-labelledby="headingSolution6">
+<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
 <div class="accordion-body">
 <p>C gets printed because the first two conditions,
 <code>4 &gt; 5</code> and <code>4 == 5</code>, are not true, but
@@ -3044,7 +3044,7 @@ <h3 class="callout-title">Close Enough<a class="anchor" aria-label="anchor" href
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   <h4 class="accordion-header" id="headingSolution7"> Hint </h4>
 </button>
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 <div class="accordion-body">
 <p>There is a <a href="https://docs.python.org/3/library/functions.html#abs" class="external-link">built-in
 function <code>abs</code></a> that returns the absolute value of a
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 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution8" aria-expanded="false" aria-controls="collapseSolution8">
   <h4 class="accordion-header" id="headingSolution8"> Solution 1 </h4>
 </button>
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   <h4 class="accordion-header" id="headingSolution9"> Solution 2 </h4>
 </button>
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@@ -3137,7 +3137,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution10" aria-expanded="false" aria-controls="collapseSolution10">
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 </button>
-<div id="collapseSolution10" class="accordion-collapse collapse" data-bs-parent="#accordionSolution10" aria-labelledby="headingSolution10">
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 <div class="codewrapper sourceCode" id="cb58">
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@@ -3236,7 +3236,7 @@ <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"><
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution11" aria-expanded="false" aria-controls="collapseSolution11">
   <h4 class="accordion-header" id="headingSolution11"> Show me the solution </h4>
 </button>
-<div id="collapseSolution11" class="accordion-collapse collapse" data-bs-parent="#accordionSolution11" aria-labelledby="headingSolution11">
+<div id="collapseSolution11" class="accordion-collapse collapse" aria-labelledby="headingSolution11" data-bs-parent="#accordionSolution11">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb65">
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@@ -3262,7 +3262,7 @@ <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"><
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution12" aria-expanded="false" aria-controls="collapseSolution12">
   <h4 class="accordion-header" id="headingSolution12"> Counting Vowels </h4>
 </button>
-<div id="collapseSolution12" class="accordion-collapse collapse" data-bs-parent="#accordionSolution12" aria-labelledby="headingSolution12">
+<div id="collapseSolution12" class="accordion-collapse collapse" aria-labelledby="headingSolution12" data-bs-parent="#accordionSolution12">
 <div class="accordion-body">
 <ol style="list-style-type: decimal">
 <li>Write a loop that counts the number of vowels in a character
@@ -4046,7 +4046,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
 <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" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
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 <div class="codewrapper sourceCode" id="cb54">
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@@ -4093,7 +4093,7 @@ <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"><
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 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>Python will first execute the function <code>add</code> with
 <code>a = 7</code> and <code>b = 3</code>, and, therefore, print
@@ -4144,7 +4144,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3"> Show me the solution </h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
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 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb60">
 <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -4177,7 +4177,7 @@ <h3 class="callout-title">Rescaling an Array<a class="anchor" aria-label="anchor
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4"> Show me the solution </h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb61">
 <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -4213,7 +4213,7 @@ <h3 class="callout-title">Testing and Documenting Your Function<a class="anchor"
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5"> Show me the solution </h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb62">
 <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -4254,7 +4254,7 @@ <h3 class="callout-title">Defining Defaults<a class="anchor" aria-label="anchor"
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution6" aria-expanded="false" aria-controls="collapseSolution6">
   <h4 class="accordion-header" id="headingSolution6"> Show me the solution </h4>
 </button>
-<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
+<div id="collapseSolution6" class="accordion-collapse collapse" data-bs-parent="#accordionSolution6" aria-labelledby="headingSolution6">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb63">
 <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -4304,7 +4304,7 @@ <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"><
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution7" aria-expanded="false" aria-controls="collapseSolution7">
   <h4 class="accordion-header" id="headingSolution7"> Show me the solution </h4>
 </button>
-<div id="collapseSolution7" class="accordion-collapse collapse" aria-labelledby="headingSolution7" data-bs-parent="#accordionSolution7">
+<div id="collapseSolution7" class="accordion-collapse collapse" data-bs-parent="#accordionSolution7" aria-labelledby="headingSolution7">
 <div class="accordion-body">
 <div class="codewrapper">
 <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -4379,7 +4379,7 @@ <h3 class="code-label">PYTHON<i aria-hidden="true" data-feather="chevron-left"><
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution8" aria-expanded="false" aria-controls="collapseSolution8">
   <h4 class="accordion-header" id="headingSolution8"> Show me the solution </h4>
 </button>
-<div id="collapseSolution8" class="accordion-collapse collapse" aria-labelledby="headingSolution8" data-bs-parent="#accordionSolution8">
+<div id="collapseSolution8" class="accordion-collapse collapse" data-bs-parent="#accordionSolution8" aria-labelledby="headingSolution8">
 <div class="accordion-body">
 <p>Attempting to define the <code>numbers</code> function results in
 <code>4. SyntaxError</code>. The defined parameters <code>two</code> and
diff --git a/pkgdown.yml b/pkgdown.yml
index f680ae2a..6d8a03d9 100644
--- a/pkgdown.yml
+++ b/pkgdown.yml
@@ -2,4 +2,4 @@ pandoc: 3.1.11
 pkgdown: 2.1.0
 pkgdown_sha: ~
 articles: {}
-last_built: 2024-07-11T22:26Z
+last_built: 2024-07-11T22:31Z
diff --git a/sitemap.xml b/sitemap.xml
index 21c53748..dfbe483a 100644
--- a/sitemap.xml
+++ b/sitemap.xml
@@ -39,9 +39,15 @@
   <url>
     <loc>https://UNECE.github.io/ModernStats_Python/LICENSE.html</loc>
   </url>
+  <url>
+    <loc>https://UNECE.github.io/ModernStats_Python/aio.html</loc>
+  </url>
   <url>
     <loc>https://UNECE.github.io/ModernStats_Python/discuss.html</loc>
   </url>
+  <url>
+    <loc>https://UNECE.github.io/ModernStats_Python/images.html</loc>
+  </url>
   <url>
     <loc>https://UNECE.github.io/ModernStats_Python/index.html</loc>
   </url>
@@ -84,18 +90,36 @@
   <url>
     <loc>https://UNECE.github.io/ModernStats_Python/instructor/LICENSE.html</loc>
   </url>
+  <url>
+    <loc>https://UNECE.github.io/ModernStats_Python/instructor/aio.html</loc>
+  </url>
   <url>
     <loc>https://UNECE.github.io/ModernStats_Python/instructor/discuss.html</loc>
   </url>
+  <url>
+    <loc>https://UNECE.github.io/ModernStats_Python/instructor/images.html</loc>
+  </url>
   <url>
     <loc>https://UNECE.github.io/ModernStats_Python/instructor/index.html</loc>
   </url>
+  <url>
+    <loc>https://UNECE.github.io/ModernStats_Python/instructor/instructor-notes.html</loc>
+  </url>
+  <url>
+    <loc>https://UNECE.github.io/ModernStats_Python/instructor/key-points.html</loc>
+  </url>
   <url>
     <loc>https://UNECE.github.io/ModernStats_Python/instructor/profiles.html</loc>
   </url>
   <url>
     <loc>https://UNECE.github.io/ModernStats_Python/instructor/reference.html</loc>
   </url>
+  <url>
+    <loc>https://UNECE.github.io/ModernStats_Python/instructor-notes.html</loc>
+  </url>
+  <url>
+    <loc>https://UNECE.github.io/ModernStats_Python/key-points.html</loc>
+  </url>
   <url>
     <loc>https://UNECE.github.io/ModernStats_Python/profiles.html</loc>
   </url>