Updated sample problem docs

Files changed: M sample-problems/Algebra/AlgebraicFractionAnswer.html M sample-problems/Algebra/AlgebraicFractionAnswer.pg M sample-problems/Algebra/AnswerBlankInExponent.html M sample-problems/Algebra/AnswerBlankInExponent.pg M sample-problems/Algebra/AnswerUpToMultiplication.html M sample-problems/Algebra/DomainRange.html M sample-problems/Algebra/DynamicGraph.html M sample-problems/Algebra/DynamicGraph.pg M sample-problems/Algebra/EquationDefiningFunction.html M sample-problems/Algebra/EquationImplicitFunction.html M sample-problems/Algebra/ExpandedPolynomial.html M sample-problems/Algebra/FactoredPolynomial.html M sample-problems/Algebra/FractionAnswer.html M sample-problems/Algebra/FunctionDecomposition.html M sample-problems/Algebra/GraphToolCircle.html M sample-problems/Algebra/GraphToolCubic.html M sample-problems/Algebra/GraphToolCustomChecker.html M sample-problems/Algebra/GraphToolLine.html M sample-problems/Algebra/GraphToolNumberLine.html M sample-problems/Algebra/GraphToolNumberLine.pg M sample-problems/Algebra/GraphToolPoints.html M sample-problems/Algebra/InequalityAnswer.html M sample-problems/Algebra/InequalityAnswer.pg M sample-problems/Algebra/LinearInequality.html M sample-problems/Algebra/LinearInequality.pg M sample-problems/Algebra/Logarithms.html M sample-problems/Algebra/PointAnswers.html M sample-problems/Algebra/ScalingTranslating.html A sample-problems/Algebra/SimpleFactoring.html A sample-problems/Algebra/SimpleFactoring.pg M sample-problems/Algebra/SolutionForEquation.html M sample-problems/Algebra/StringOrOtherType.html M sample-problems/Algebra/TableOfValues.html M sample-problems/Algebra/UnorderedAnswers.html M sample-problems/Complex/ComplexOperations.html M sample-problems/Complex/ComplexOperations.pg M sample-problems/Complex/LimitedComplex.html M sample-problems/Complex/LimitedComplex.pg M sample-problems/Complex/OtherOperations.html M sample-problems/Complex/OtherOperations.pg M sample-problems/DiffCalc/AnswerWithUnits.html M sample-problems/DiffCalc/DifferenceQuotient.html M sample-problems/DiffCalc/DifferentiateFunction.html M sample-problems/DiffCalc/LinearApprox.html M sample-problems/DiffCalcMV/ContourPlot.html M sample-problems/DiffCalcMV/ContourPlot.pg M sample-problems/DiffCalcMV/ImplicitPlane.html M sample-problems/DiffEq/GeneralSolutionODE.html M sample-problems/DiffEq/GeneralSolutionODE.pg M sample-problems/DiffEq/HeavisideStep.html M sample-problems/DiffEq/HeavisideStep.pg M sample-problems/DiffEq/PrimesInFormulas.html M sample-problems/IntegralCalc/DoubleIntegral.html M sample-problems/IntegralCalc/GraphShading.html M sample-problems/IntegralCalc/IndefiniteIntegrals.html M sample-problems/IntegralCalc/LimitsOfIntegration.html M sample-problems/IntegralCalc/LimitsOfIntegration.pg M sample-problems/IntegralCalc/RiemannSums.html M sample-problems/IntegralCalc/VolumeOfRevolution.html M sample-problems/IntegralCalc/VolumeOfRevolution.pg M sample-problems/LinearAlgebra/MatrixAnswer1.html M sample-problems/LinearAlgebra/MatrixAnswer2.html M sample-problems/LinearAlgebra/MatrixCustomAnswerChecker.html M sample-problems/LinearAlgebra/MatrixOperations.html M sample-problems/LinearAlgebra/RowOperations.html M sample-problems/Misc/ChemicalReaction.html M sample-problems/Misc/DraggableProof.html A sample-problems/Misc/DynamicGraphPolygon.html A sample-problems/Misc/DynamicGraphPolygon.pg M sample-problems/Misc/EssayAnswer.html M sample-problems/Misc/FormulaAnswer.html M sample-problems/Misc/FormulaDomain.html M sample-problems/Misc/FormulaTestPoints.html M sample-problems/Misc/FormulaTestPoints.pg M sample-problems/Misc/IframeEmbedding.html M sample-problems/Misc/ManyMultipleChoice.html M sample-problems/Misc/Matching.html M sample-problems/Misc/Matching.pg M sample-problems/Misc/MatchingAlt.html A sample-problems/Misc/MatchingGraphs.html A sample-problems/Misc/MatchingGraphs.pg M sample-problems/Misc/MultipleChoiceCheckbox.html M sample-problems/Misc/MultipleChoicePopup.html M sample-problems/Misc/MultipleChoiceRadio.html M sample-problems/Misc/RandomPerson.html M sample-problems/Misc/Scaffolding.html A sample-problems/Parametric/ParametricEquationAnswers.html A sample-problems/Parametric/ParametricEquationAnswers.pg M sample-problems/Parametric/ParametricPlot.html M sample-problems/Parametric/ParametricPlot.pg M sample-problems/Parametric/PolarGraph.html M sample-problems/Parametric/SpaceCurveGraph.html M sample-problems/Parametric/Spacecurve.html M sample-problems/Parametric/SurfaceGraph.html M sample-problems/Parametric/VectorParametricDerivative.html M sample-problems/Parametric/VectorParametricFunction.html M sample-problems/Parametric/VectorParametricLines.html M sample-problems/Parametric/VectorParametricLines.pg M sample-problems/Sequences/AnswerOrderedList.html M sample-problems/Sequences/AnswerOrderedList.pg M sample-problems/Sequences/ExplicitSequence.html M sample-problems/Sequences/RecursiveSequence.html M sample-problems/Sequences/SeriesTest.html M sample-problems/Sequences/SeriesTest.pg A sample-problems/Statistics/linearRegression.html A sample-problems/Statistics/linearRegression.pg A sample-problems/Statistics/meanStdDev.html A sample-problems/Statistics/meanStdDev.pg A sample-problems/Trig/DisableFunctionsTrig.html A sample-problems/Trig/DisableFunctionsTrig.pg M sample-problems/Trig/DraggableIdentity.html M sample-problems/Trig/PeriodicAnswers.html M sample-problems/Trig/ProvingTrigIdentities.html A sample-problems/Trig/SpecialTrigValues.html A sample-problems/Trig/SpecialTrigValues.pg M sample-problems/Trig/TrigDegrees.html M sample-problems/Trig/TrigIdentities.html M sample-problems/Trig/TrigIdentities.pg M sample-problems/VectorCalc/CylindricalGraph3D.html M sample-problems/VectorCalc/CylindricalGraph3D.pg M sample-problems/VectorCalc/DirectionField.html M sample-problems/VectorCalc/RectangularGraph3D.html M sample-problems/VectorCalc/RectangularGraph3D.pg M sample-problems/VectorCalc/VectorFieldGraph2D.html M sample-problems/VectorCalc/VectorFieldGraph3D/VectorFieldGraph3D1.html M sample-problems/VectorCalc/VectorFieldGraph3D/VectorFieldGraph3D1.pg A sample-problems/VectorCalc/VectorLineSegment1.html A sample-problems/VectorCalc/VectorLineSegment1.pg A sample-problems/VectorCalc/VectorLineSegment2.html A sample-problems/VectorCalc/VectorLineSegment2.pg M sample-problems/VectorCalc/VectorOperations.html M sample-problems/VectorCalc/VectorOperations.pg A sample-problems/VectorCalc/VectorParametricLine.html A sample-problems/VectorCalc/VectorParametricLine.pg M sample-problems/VectorCalc/Vectors.html M sample-problems/VectorCalc/Vectors.pg M sample-problems/categories.html M sample-problems/macros.html M sample-problems/problem-techniques/AdaptiveParameters.html M sample-problems/problem-techniques/AddingFunctions.html M sample-problems/problem-techniques/AnswerHints.html M sample-problems/problem-techniques/AnswerInExponent.html M sample-problems/problem-techniques/AnswerIsSolutionToEquation.html M sample-problems/problem-techniques/AnyAnswerMarkedCorrect.html M sample-problems/problem-techniques/CalculatingWithPoints.html M sample-problems/problem-techniques/CalculatingWithPoints.pg M sample-problems/problem-techniques/ComposingFunctions.html M sample-problems/problem-techniques/ConstantsInProblems.html M sample-problems/problem-techniques/CustomAnswerCheckers.html M sample-problems/problem-techniques/CustomAnswerListChecker.html M sample-problems/problem-techniques/CustomAnswerListChecker.pg M sample-problems/problem-techniques/DataTables.html M sample-problems/problem-techniques/DifferentiatingFormulas.html M sample-problems/problem-techniques/DigitsTolType.html M sample-problems/problem-techniques/DisableFunctions.html M sample-problems/problem-techniques/DraggableSubsets.html M sample-problems/problem-techniques/DraggableSubsets.pg M sample-problems/problem-techniques/EquationEvaluators.html M sample-problems/problem-techniques/EquationEvaluators.pg M sample-problems/problem-techniques/EquationsDefiningFunctions.html M sample-problems/problem-techniques/ErrorMessageCustomization.html M sample-problems/problem-techniques/EvalVersusSubstitute.html M sample-problems/problem-techniques/ExtractingCoordinatesFromPoint.html M sample-problems/problem-techniques/ExtractingCoordinatesFromPoint.pg M sample-problems/problem-techniques/FactoringAndExpanding.html M sample-problems/problem-techniques/FormattingDecimals.html M sample-problems/problem-techniques/FormulasToConstants.html M sample-problems/problem-techniques/FormulasToConstants.pg M sample-problems/problem-techniques/GraphsInTables.html M sample-problems/problem-techniques/GraphsInTables.pg M sample-problems/problem-techniques/HtmlLinks.html M sample-problems/problem-techniques/HtmlLinks.pg M sample-problems/problem-techniques/Images.html M sample-problems/problem-techniques/Images.pg M sample-problems/problem-techniques/InequalityEvaluators.html M sample-problems/problem-techniques/IntervalEvaluators.html M sample-problems/problem-techniques/Knowls.html M sample-problems/problem-techniques/LayoutTable.html M sample-problems/problem-techniques/LayoutTable.pg A sample-problems/problem-techniques/Multianswer.html A sample-problems/problem-techniques/Multianswer.pg M sample-problems/problem-techniques/NumericalTolerance.html M sample-problems/problem-techniques/OtherVariables.html M sample-problems/problem-techniques/Percent.html M sample-problems/problem-techniques/RandomFunction.html M sample-problems/problem-techniques/RandomFunction.pg A sample-problems/problem-techniques/RestrictAnswerToFraction.html A sample-problems/problem-techniques/RestrictAnswerToFraction.pg A sample-problems/problem-techniques/RestrictingFunctions.html A sample-problems/problem-techniques/RestrictingFunctions.pg A sample-problems/problem-techniques/SimplePopUp.html A sample-problems/problem-techniques/SimplePopUp.pg M sample-problems/problem-techniques/StaticImages.html M sample-problems/problem-techniques/StringsInContext.html M sample-problems/problem-techniques/TikZImages.html M sample-problems/problem-techniques/WeightedGrader.html M sample-problems/problem-techniques/WeightedGrader.pg M sample-problems/snippets/CommentsForInstructors.html M sample-problems/subjects.html M sample-problems/techniques.html
openwebwork · Jul 18, 2023 · 36c7e9d · 36c7e9d
1 parent d555530
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Showing 200 changed files with 6,830 additions and 800 deletions.
diff --git a/sample-problems/Algebra/AlgebraicFractionAnswer.html b/sample-problems/Algebra/AlgebraicFractionAnswer.html
@@ -51,8 +51,9 @@ <h2>POD for Macro Files</h2>
 						type="button" data-code="DOCUMENT();
 
 loadMacros(
-    &#39;PGstandard.pl&#39;,  &#39;PGML.pl&#39;, &#39;niceTables.pl&#39;,
-    &#39;parserMultiAnswer.pl&#39;, &#39;PGcourse.pl&#39;
+    &#39;PGstandard.pl&#39;, &#39;PGML.pl&#39;,
+    &#39;niceTables.pl&#39;, &#39;parserMultiAnswer.pl&#39;,
+    &#39;PGcourse.pl&#39;
 );
 " aria-label="copy to clipboard">
 						<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor"
@@ -63,8 +64,9 @@ <h2>POD for Macro Files</h2>
 					<pre class="CodeMirror cm-s-default m-0 h-100 p-3 border border-secondary overflow-x-scroll">DOCUMENT();
 
 loadMacros(
-    &#39;PGstandard.pl&#39;,  &#39;PGML.pl&#39;, &#39;niceTables.pl&#39;,
-    &#39;parserMultiAnswer.pl&#39;, &#39;PGcourse.pl&#39;
+    &#39;PGstandard.pl&#39;, &#39;PGML.pl&#39;,
+    &#39;niceTables.pl&#39;, &#39;parserMultiAnswer.pl&#39;,
+    &#39;PGcourse.pl&#39;
 );
 </pre>
 				</div>
@@ -83,7 +85,7 @@ <h2>POD for Macro Files</h2>
     $a = random(2, 8, 2);
     $b = random(3, 9, 2);
     $c = random(1, 9, 1);
-} until ($a*$c != $b);
+} until ($a * $c != $b);
 
 $num = Formula(&quot;$a y - $b&quot;);
 $den = Formula(&quot;y - $c&quot;);
@@ -124,18 +126,15 @@ <h2>POD for Macro Files</h2>
 );
 
 $frac = LayoutTable(
-    [[
+    [ [
         &quot;\(\displaystyle\frac{$a y}{y-$c} + \frac{$b}{$c - y}=\)&quot;,
         LayoutTable(
-            [
-                [[ans_rule(4), bottom =&gt; 1]],
-                [ans_rule(4)],
-            ],
-            padding =&gt; [0.5, 0],
+            [ [ [ ans_rule(4), bottom =&gt; 1 ] ], [ ans_rule(4) ], ],
+            padding =&gt; [ 0.5, 0 ],
         )
-    ]],
-    padding =&gt; [0, 0.5],
-    valign =&gt; &#39;middle&#39;,
+    ] ],
+    padding =&gt; [ 0, 0.5 ],
+    valign  =&gt; &#39;middle&#39;,
 );
 " aria-label="copy to clipboard">
 						<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor"
@@ -150,7 +149,7 @@ <h2>POD for Macro Files</h2>
     $a = random(2, 8, 2);
     $b = random(3, 9, 2);
     $c = random(1, 9, 1);
-} until ($a*$c != $b);
+} until ($a * $c != $b);
 
 $num = Formula(&quot;$a y - $b&quot;);
 $den = Formula(&quot;y - $c&quot;);
@@ -191,18 +190,15 @@ <h2>POD for Macro Files</h2>
 );
 
 $frac = LayoutTable(
-    [[
+    [ [
         &quot;\(\displaystyle\frac{$a y}{y-$c} + \frac{$b}{$c - y}=\)&quot;,
         LayoutTable(
-            [
-                [[ans_rule(4), bottom =&gt; 1]],
-                [ans_rule(4)],
-            ],
-            padding =&gt; [0.5, 0],
+            [ [ [ ans_rule(4), bottom =&gt; 1 ] ], [ ans_rule(4) ], ],
+            padding =&gt; [ 0.5, 0 ],
         )
-    ]],
-    padding =&gt; [0, 0.5],
-    valign =&gt; &#39;middle&#39;,
+    ] ],
+    padding =&gt; [ 0, 0.5 ],
+    valign  =&gt; &#39;middle&#39;,
 );
 </pre>
 				</div>
@@ -290,7 +286,8 @@ <h2>POD for Macro Files</h2>
 		}
 
 		for (const btn of document.querySelectorAll('.clipboard-btn')) {
-			btn.addEventListener('click', () => navigator.clipboard.writeText(btn.dataset.code));
+			if (navigator.clipboard) btn.addEventListener('click', () => navigator.clipboard.writeText(btn.dataset.code));
+			else btn?.remove();
 		}
 	</script>
 </body>

diff --git a/sample-problems/Algebra/AlgebraicFractionAnswer.pg b/sample-problems/Algebra/AlgebraicFractionAnswer.pg
@@ -1,8 +1,9 @@
 DOCUMENT();
 
 loadMacros(
-    'PGstandard.pl',  'PGML.pl', 'niceTables.pl',
-    'parserMultiAnswer.pl', 'PGcourse.pl'
+    'PGstandard.pl', 'PGML.pl',
+    'niceTables.pl', 'parserMultiAnswer.pl',
+    'PGcourse.pl'
 );
 
 Context()->variables->are(y => 'Real');
@@ -12,7 +13,7 @@ do {
     $a = random(2, 8, 2);
     $b = random(3, 9, 2);
     $c = random(1, 9, 1);
-} until ($a*$c != $b);
+} until ($a * $c != $b);
 
 $num = Formula("$a y - $b");
 $den = Formula("y - $c");
@@ -53,18 +54,15 @@ $multians = MultiAnswer($num, $den)->with(
 );
 
 $frac = LayoutTable(
-    [[
+    [ [
         "\(\displaystyle\frac{$a y}{y-$c} + \frac{$b}{$c - y}=\)",
         LayoutTable(
-            [
-                [[ans_rule(4), bottom => 1]],
-                [ans_rule(4)],
-            ],
-            padding => [0.5, 0],
+            [ [ [ ans_rule(4), bottom => 1 ] ], [ ans_rule(4) ], ],
+            padding => [ 0.5, 0 ],
         )
-    ]],
-    padding => [0, 0.5],
-    valign => 'middle',
+    ] ],
+    padding => [ 0, 0.5 ],
+    valign  => 'middle',
 );
 
 BEGIN_PGML

diff --git a/sample-problems/Algebra/AnswerBlankInExponent.html b/sample-problems/Algebra/AnswerBlankInExponent.html
@@ -33,12 +33,6 @@ <h2>Complete Code</h2>
 				Download file: <a href="AnswerBlankInExponent.pg">AnswerBlankInExponent.pg</a>
 </p>
 			</div>
-				<div class="col">
-					<h2>POD for Macro Files</h2>
-					<ul>
-								<li><a href="https://openwebwork.github.io/pg-docs/pod/pg/macros/ui/niceTables.html">niceTables.pl</a></li>
-					</ul>
-				</div>
 		</div>
 		<div class="row">
 			<div class="col text-center"><h2 class="fw-bold fs-3">PG problem file</h2></div>
@@ -49,7 +43,7 @@ <h2>POD for Macro Files</h2>
 					<button class="clipboard-btn btn btn-sm btn-secondary position-absolute top-0 end-0 me-1 mt-1 z-1"
 						type="button" data-code="DOCUMENT();
 
-loadMacros(&#39;PGstandard.pl&#39;, &#39;PGML.pl&#39;, &#39;niceTables.pl&#39;, &#39;PGcourse.pl&#39;);
+loadMacros(&#39;PGstandard.pl&#39;, &#39;PGML.pl&#39;, &#39;PGcourse.pl&#39;);
 " aria-label="copy to clipboard">
 						<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor"
 							class="bi bi-clipboard-fill" viewBox="0 0 16 16">
@@ -58,12 +52,12 @@ <h2>POD for Macro Files</h2>
 					</button>
 					<pre class="CodeMirror cm-s-default m-0 h-100 p-3 border border-secondary overflow-x-scroll">DOCUMENT();
 
-loadMacros(&#39;PGstandard.pl&#39;, &#39;PGML.pl&#39;, &#39;niceTables.pl&#39;, &#39;PGcourse.pl&#39;);
+loadMacros(&#39;PGstandard.pl&#39;, &#39;PGML.pl&#39;, &#39;PGcourse.pl&#39;);
 </pre>
 				</div>
 				<div class="explanation preamble col-sm-12 col-md-6 order-md-last order-first p-3 border border-dark">
 					<p><b>Preamble</b></p>
-						<p>The macro <code>niceTables.pl</code> provides a way to format the problem.</p>
+						These standard macros need to be loaded.
 				</div>
 			</div>
 			<div class="row">
@@ -81,30 +75,16 @@ <h2>POD for Macro Files</h2>
 $exponent = Formula(&quot;$n&quot;);
 
 # Display exponents nicely
-# Context()-&gt;texStrings;
-
-$tab = LayoutTable([[
-    [&quot;\(\displaystyle $expression= \Big(\)&quot; . ans_rule(4) . &quot;\(\Big)\)&quot;, cellcss =&gt; { padding =&gt; &#39;20pt 0pt 0pt 4pt&#39;}],
-    [ ans_rule(4), cellcss =&gt; {padding =&gt; &#39;0pt 0pt 20pt 0pt&#39;}]
-]]);
-
-# if ($displayMode eq &#39;TeX&#39;) {
-#     $showpower =
-#         &quot;\( \displaystyle $expression = (&quot;
-#         . ans_rule(4) . &quot;)^{&quot;
-#         . ans_rule(4) . &quot;}\)&quot;;
-# } else {
-#     $showpower = ColumnTable(
-#         &quot;\( \displaystyle $expression = \Big( \)&quot;
-#             . ans_rule(4)
-#             . &quot;\( \Big) \)&quot;,
-#         ans_rule(4) . $BR . $BR,
-#         indent     =&gt; 0,
-#         separation =&gt; 0,
-#         valign     =&gt; &#39;BOTTOM&#39;
-#     );
-# }
-# Context()-&gt;normalStrings;
+$exp = MODES(
+    HTML =&gt; &quot;&lt;span&gt;\(\displaystyle $expression= \Big(\)&quot;
+        . ans_rule(4)
+        . &#39;\(\Big)\)&lt;/span&gt;&lt;span style=&quot;vertical-align: 12pt;&quot;&gt;&#39;
+        . ans_rule(4)
+        . &#39;&lt;/span&gt;&#39;,
+    TeX =&gt; &quot;\( \displaystyle $expression = (&quot;
+        . ans_rule(4) . &quot;)^{&quot;
+        . ans_rule(4) . &quot;}\)&quot;
+);
 " aria-label="copy to clipboard">
 						<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor"
 							class="bi bi-clipboard-fill" viewBox="0 0 16 16">
@@ -123,36 +103,22 @@ <h2>POD for Macro Files</h2>
 $exponent = Formula(&quot;$n&quot;);
 
 # Display exponents nicely
-# Context()-&gt;texStrings;
-
-$tab = LayoutTable([[
-    [&quot;\(\displaystyle $expression= \Big(\)&quot; . ans_rule(4) . &quot;\(\Big)\)&quot;, cellcss =&gt; { padding =&gt; &#39;20pt 0pt 0pt 4pt&#39;}],
-    [ ans_rule(4), cellcss =&gt; {padding =&gt; &#39;0pt 0pt 20pt 0pt&#39;}]
-]]);
-
-# if ($displayMode eq &#39;TeX&#39;) {
-#     $showpower =
-#         &quot;\( \displaystyle $expression = (&quot;
-#         . ans_rule(4) . &quot;)^{&quot;
-#         . ans_rule(4) . &quot;}\)&quot;;
-# } else {
-#     $showpower = ColumnTable(
-#         &quot;\( \displaystyle $expression = \Big( \)&quot;
-#             . ans_rule(4)
-#             . &quot;\( \Big) \)&quot;,
-#         ans_rule(4) . $BR . $BR,
-#         indent     =&gt; 0,
-#         separation =&gt; 0,
-#         valign     =&gt; &#39;BOTTOM&#39;
-#     );
-# }
-# Context()-&gt;normalStrings;
+$exp = MODES(
+    HTML =&gt; &quot;&lt;span&gt;\(\displaystyle $expression= \Big(\)&quot;
+        . ans_rule(4)
+        . &#39;\(\Big)\)&lt;/span&gt;&lt;span style=&quot;vertical-align: 12pt;&quot;&gt;&#39;
+        . ans_rule(4)
+        . &#39;&lt;/span&gt;&#39;,
+    TeX =&gt; &quot;\( \displaystyle $expression = (&quot;
+        . ans_rule(4) . &quot;)^{&quot;
+        . ans_rule(4) . &quot;}\)&quot;
+);
 </pre>
 				</div>
 				<div class="explanation setup col-sm-12 col-md-6 order-md-last order-first p-3 border border-dark">
 					<p><b>Setup</b></p>
 						<p>We want the only variables to be <code>a</code> and <code>b</code> and choose a random power.</p>
-<p>The exponential layout is made with a table with padding on the top of the left cell and on the bottom of the right cell.</p>
+<p>The exponential layout is in HTML using a pair of adjacent <code>span</code> elements with the right one shifted up using the CSS style <code>vertical-align</code>. In hardcopy mode, we use the LaTeX exponent.</p>
 				</div>
 			</div>
 			<div class="row">
@@ -161,7 +127,7 @@ <h2>POD for Macro Files</h2>
 						type="button" data-code="BEGIN_PGML
 Rewrite the following using a single exponent.
 
-[$tab]***
+[$exp]*
 END_PGML
 " aria-label="copy to clipboard">
 						<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor"
@@ -172,13 +138,13 @@ <h2>POD for Macro Files</h2>
 					<pre class="CodeMirror cm-s-default m-0 h-100 p-3 border border-secondary overflow-x-scroll">BEGIN_PGML
 Rewrite the following using a single exponent.
 
-[$tab]***
+[$exp]*
 END_PGML
 </pre>
 				</div>
 				<div class="explanation statement col-sm-12 col-md-6 order-md-last order-first p-3 border border-dark">
 					<p><b>Statement</b></p>
-						<p>We insert the nicely formatted answer blanks using <code>$showpower</code>.</p>
+						<p>We insert exponential stored as <code>$exp</code>.</p>
 				</div>
 			</div>
 			<div class="row">
@@ -233,7 +199,8 @@ <h2>POD for Macro Files</h2>
 		}
 
 		for (const btn of document.querySelectorAll('.clipboard-btn')) {
-			btn.addEventListener('click', () => navigator.clipboard.writeText(btn.dataset.code));
+			if (navigator.clipboard) btn.addEventListener('click', () => navigator.clipboard.writeText(btn.dataset.code));
+			else btn?.remove();
 		}
 	</script>
 </body>

diff --git a/sample-problems/Algebra/AnswerBlankInExponent.pg b/sample-problems/Algebra/AnswerBlankInExponent.pg
@@ -1,6 +1,6 @@
 DOCUMENT();
 
-loadMacros('PGstandard.pl', 'PGML.pl', 'niceTables.pl', 'PGcourse.pl');
+loadMacros('PGstandard.pl', 'PGML.pl', 'PGcourse.pl');
 
 Context()->variables->are(a => 'Real', b => 'Real');
 
@@ -14,35 +14,21 @@ $base     = Formula("a*b");
 $exponent = Formula("$n");
 
 # Display exponents nicely
-# Context()->texStrings;
-
-$tab = LayoutTable([[
-    ["\(\displaystyle $expression= \Big(\)" . ans_rule(4) . "\(\Big)\)", cellcss => { padding => '20pt 0pt 0pt 4pt'}],
-    [ ans_rule(4), cellcss => {padding => '0pt 0pt 20pt 0pt'}]
-]]);
-
-# if ($displayMode eq 'TeX') {
-#     $showpower =
-#         "\( \displaystyle $expression = ("
-#         . ans_rule(4) . ")^{"
-#         . ans_rule(4) . "}\)";
-# } else {
-#     $showpower = ColumnTable(
-#         "\( \displaystyle $expression = \Big( \)"
-#             . ans_rule(4)
-#             . "\( \Big) \)",
-#         ans_rule(4) . $BR . $BR,
-#         indent     => 0,
-#         separation => 0,
-#         valign     => 'BOTTOM'
-#     );
-# }
-# Context()->normalStrings;
+$exp = MODES(
+    HTML => "<span>\(\displaystyle $expression= \Big(\)"
+        . ans_rule(4)
+        . '\(\Big)\)</span><span style="vertical-align: 12pt;">'
+        . ans_rule(4)
+        . '</span>',
+    TeX => "\( \displaystyle $expression = ("
+        . ans_rule(4) . ")^{"
+        . ans_rule(4) . "}\)"
+);
 
 BEGIN_PGML
 Rewrite the following using a single exponent.
 
-[$tab]***
+[$exp]*
 END_PGML
 
 ANS($base->cmp());

diff --git a/sample-problems/Algebra/AnswerUpToMultiplication.html b/sample-problems/Algebra/AnswerUpToMultiplication.html
@@ -164,7 +164,8 @@ <h2>Complete Code</h2>
 		}
 
 		for (const btn of document.querySelectorAll('.clipboard-btn')) {
-			btn.addEventListener('click', () => navigator.clipboard.writeText(btn.dataset.code));
+			if (navigator.clipboard) btn.addEventListener('click', () => navigator.clipboard.writeText(btn.dataset.code));
+			else btn?.remove();
 		}
 	</script>
 </body>

diff --git a/sample-problems/Algebra/DomainRange.html b/sample-problems/Algebra/DomainRange.html
@@ -199,7 +199,8 @@ <h2>POD for Macro Files</h2>
 		}
 
 		for (const btn of document.querySelectorAll('.clipboard-btn')) {
-			btn.addEventListener('click', () => navigator.clipboard.writeText(btn.dataset.code));
+			if (navigator.clipboard) btn.addEventListener('click', () => navigator.clipboard.writeText(btn.dataset.code));
+			else btn?.remove();
 		}
 	</script>
 </body>