diff --git a/dev/articles/Holdridge.html b/dev/articles/Holdridge.html
index ebae095..120149a 100644
--- a/dev/articles/Holdridge.html
+++ b/dev/articles/Holdridge.html
@@ -108,7 +108,7 @@ <h1 data-toc-skip>Holdridge plots</h1>
                         <h4 data-toc-skip class="author">Martin R.
 Smith</h4>
             
-            <h4 data-toc-skip class="date">2024-08-05</h4>
+            <h4 data-toc-skip class="date">2024-08-15</h4>
       
       <small class="dont-index">Source: <a href="https://github.com/ms609/Ternary/blob/master/vignettes/Holdridge.Rmd" class="external-link"><code>vignettes/Holdridge.Rmd</code></a></small>
       <div class="hidden name"><code>Holdridge.Rmd</code></div>
diff --git a/dev/articles/Ternary.html b/dev/articles/Ternary.html
index 0c439f3..1993202 100644
--- a/dev/articles/Ternary.html
+++ b/dev/articles/Ternary.html
@@ -108,7 +108,7 @@ <h1 data-toc-skip>Create Ternary Plots in R</h1>
                         <h4 data-toc-skip class="author">Martin R.
 Smith</h4>
             
-            <h4 data-toc-skip class="date">2024-08-05</h4>
+            <h4 data-toc-skip class="date">2024-08-15</h4>
       
       <small class="dont-index">Source: <a href="https://github.com/ms609/Ternary/blob/master/vignettes/Ternary.Rmd" class="external-link"><code>vignettes/Ternary.Rmd</code></a></small>
       <div class="hidden name"><code>Ternary.Rmd</code></div>
@@ -298,7 +298,7 @@ <h3 id="styling-points">Styling points<a class="anchor" aria-label="anchor" href
 <span>  <span class="op">)</span>,</span>
 <span>  bty <span class="op">=</span> <span class="st">"n"</span>, <span class="co"># No framing box</span></span>
 <span>  xpd <span class="op">=</span> <span class="cn">NA</span>, <span class="co"># Don't clip at margins</span></span>
-<span>  title.font <span class="op">=</span> <span class="fl">2</span>, <span class="co"># Bold</span></span>
+<span>  <span class="co"># title.font = 2, # Bold.  Argument only available in R&gt;3.6</span></span>
 <span>  title <span class="op">=</span> <span class="st">"Reflectance"</span></span>
 <span><span class="op">)</span></span>
 <span></span>
@@ -312,7 +312,7 @@ <h3 id="styling-points">Styling points<a class="anchor" aria-label="anchor" href
 <span>    <span class="st">"\u03bcm"</span> <span class="co"># µm</span></span>
 <span>  <span class="op">)</span>,</span>
 <span>  title <span class="op">=</span> <span class="st">"Grain size"</span>,</span>
-<span>  title.font <span class="op">=</span> <span class="fl">2</span>, <span class="co"># Bold</span></span>
+<span>  <span class="co"># title.font = 2, # Bold. Argument only available in R&gt;3.6</span></span>
 <span>  bty <span class="op">=</span> <span class="st">"n"</span>, <span class="co"># Do not frame with box</span></span>
 <span>  cex <span class="op">=</span> <span class="fl">0.8</span></span>
 <span><span class="op">)</span></span></code></pre></div>
diff --git a/dev/articles/Ternary_files/figure-html/point-styling-1.png b/dev/articles/Ternary_files/figure-html/point-styling-1.png
index 3f5a8c4..53cfc49 100644
Binary files a/dev/articles/Ternary_files/figure-html/point-styling-1.png and b/dev/articles/Ternary_files/figure-html/point-styling-1.png differ
diff --git a/dev/articles/annotation.html b/dev/articles/annotation.html
index a2ec1c2..ea26886 100644
--- a/dev/articles/annotation.html
+++ b/dev/articles/annotation.html
@@ -108,7 +108,7 @@ <h1 data-toc-skip>Adding annotations</h1>
                         <h4 data-toc-skip class="author">Martin R.
 Smith</h4>
             
-            <h4 data-toc-skip class="date">2024-08-05</h4>
+            <h4 data-toc-skip class="date">2024-08-15</h4>
       
       <small class="dont-index">Source: <a href="https://github.com/ms609/Ternary/blob/master/vignettes/annotation.Rmd" class="external-link"><code>vignettes/annotation.Rmd</code></a></small>
       <div class="hidden name"><code>annotation.Rmd</code></div>
diff --git a/dev/articles/interpolation.html b/dev/articles/interpolation.html
index 05e0875..dec2aef 100644
--- a/dev/articles/interpolation.html
+++ b/dev/articles/interpolation.html
@@ -108,7 +108,7 @@ <h1 data-toc-skip>Interpolating and contouring</h1>
                         <h4 data-toc-skip class="author">Martin R.
 Smith</h4>
             
-            <h4 data-toc-skip class="date">2024-08-05</h4>
+            <h4 data-toc-skip class="date">2024-08-15</h4>
       
       <small class="dont-index">Source: <a href="https://github.com/ms609/Ternary/blob/master/vignettes/interpolation.Rmd" class="external-link"><code>vignettes/interpolation.Rmd</code></a></small>
       <div class="hidden name"><code>interpolation.Rmd</code></div>
diff --git a/dev/articles/new-users.html b/dev/articles/new-users.html
index 923343b..46aef3b 100644
--- a/dev/articles/new-users.html
+++ b/dev/articles/new-users.html
@@ -108,7 +108,7 @@ <h1 data-toc-skip>Introduction for new R users</h1>
                         <h4 data-toc-skip class="author">Martin R.
 Smith</h4>
             
-            <h4 data-toc-skip class="date">2024-08-05</h4>
+            <h4 data-toc-skip class="date">2024-08-15</h4>
       
       <small class="dont-index">Source: <a href="https://github.com/ms609/Ternary/blob/master/vignettes/new-users.Rmd" class="external-link"><code>vignettes/new-users.Rmd</code></a></small>
       <div class="hidden name"><code>new-users.Rmd</code></div>
diff --git a/dev/pkgdown.yml b/dev/pkgdown.yml
index 53e8797..1191c31 100644
--- a/dev/pkgdown.yml
+++ b/dev/pkgdown.yml
@@ -7,7 +7,7 @@ articles:
   interpolation: interpolation.html
   new-users: new-users.html
   Ternary: Ternary.html
-last_built: 2024-08-05T12:49Z
+last_built: 2024-08-15T13:54Z
 urls:
   reference: https://ms609.github.io/Ternary/reference
   article: https://ms609.github.io/Ternary/articles